diff --git a/Charcoal.tscn b/Charcoal.tscn
index 1444a75..491f1bc 100644
--- a/Charcoal.tscn
+++ b/Charcoal.tscn
@@ -6,12 +6,17 @@
 [ext_resource type="Script" uid="uid://dvobm6vcfnqe8" path="res://addons/godot-xr-tools/hands/poses/hand_pose_settings.gd" id="4_mgacb"]
 [ext_resource type="PackedScene" uid="uid://ctw7nbntd5pcj" path="res://addons/godot-xr-tools/objects/grab_points/grab_point_hand_right.tscn" id="5_vw7i6"]
 [ext_resource type="Animation" uid="uid://d1xnpyc08njjx" path="res://addons/godot-xr-tools/hands/animations/right/Grip 4.res" id="6_cp3eg"]
+[ext_resource type="Script" path="res://combinable_item.gd" id="7_comb"]
+[ext_resource type="Script" path="res://combine_zone.gd" id="8_zone"]
 
 [sub_resource type="CylinderShape3D" id="CylinderShape3D_gkni8"]
 custom_solver_bias = 0.1
 height = 0.1
 radius = 0.1
 
+[sub_resource type="BoxShape3D" id="BoxShape3D_combine"]
+size = Vector3(0.16, 0.16, 0.16)
+
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_e28iu"]
 albedo_color = Color(0.06879827, 0.06879828, 0.06879828, 1)
 
@@ -46,3 +51,13 @@ hand_pose = SubResource("Resource_lc22d")
 [node name="GrabPointHandRight" parent="." index="3" unique_id=514404634 instance=ExtResource("5_vw7i6")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.06531982, 0.042291984, -0.08604182)
 hand_pose = SubResource("Resource_qyiot")
+
+[node name="CombinableItem" type="Node" parent="." index="4"]
+script = ExtResource("7_comb")
+id = &"charcoal"
+
+[node name="CombineZone" type="Area3D" parent="." index="5"]
+script = ExtResource("8_zone")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="CombineZone"]
+shape = SubResource("BoxShape3D_combine")
diff --git a/Counter.tscn b/Counter.tscn
index 1f51b25..6b08195 100644
--- a/Counter.tscn
+++ b/Counter.tscn
@@ -6,7 +6,7 @@
 
 [sub_resource type="BoxMesh" id="BoxMesh_i5j2u"]
 
-[sub_resource type="SphereShape3D" id="SphereShape3D_vlqg6"]
+[sub_resource type="SphereShape3D" id="SphereShape3D_dlkho"]
 
 [node name="Counter" type="StaticBody3D" unique_id=1487893288]
 
@@ -20,14 +20,14 @@ mesh = SubResource("BoxMesh_i5j2u")
 transform = Transform3D(0.9999992, 0, 0, 0, 0.99999946, 0, 0, 0, 0.9999992, 0.002797456, 0.6309581, -0.2812457)
 text = "Counter"
 
-[node name="XRToolsSnapZone" type="Area3D" parent="." unique_id=186065581]
+[node name="XRToolsSnapZone" type="Area3D" parent="." unique_id=1647380272]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.5270121, 0)
-collision_layer = 0
+collision_layer = 65536
 collision_mask = 65536
 script = ExtResource("1_dlkho")
 snap_mode = 1
 metadata/_custom_type_script = "uid://cquqe4f1m1sw6"
 
-[node name="CollisionShape3D2" type="CollisionShape3D" parent="XRToolsSnapZone" unique_id=1196349092]
+[node name="CollisionShape3D2" type="CollisionShape3D" parent="XRToolsSnapZone" unique_id=969340130]
 transform = Transform3D(0.5, 0, 0, 0, 0.5, 0, 0, 0, 0.5, 0, -0.000975132, 0)
-shape = SubResource("SphereShape3D_vlqg6")
+shape = SubResource("SphereShape3D_dlkho")
diff --git a/PickupCube.tscn b/PickupCube.tscn
index f224bb8..142ac5f 100644
--- a/PickupCube.tscn
+++ b/PickupCube.tscn
@@ -8,6 +8,9 @@
 [ext_resource type="Animation" uid="uid://d1xnpyc08njjx" path="res://addons/godot-xr-tools/hands/animations/right/Grip 4.res" id="6_bdp75"]
 [ext_resource type="Script" uid="uid://bs7cxydoxk1cx" path="res://cookable_item.gd" id="7_hc3f7"]
 [ext_resource type="PackedScene" uid="uid://cucc3gaqu2nab" path="res://Charcoal.tscn" id="8_a0a5b"]
+[ext_resource type="Script" uid="uid://dounic663dn5q" path="res://combinable_item.gd" id="9_comb"]
+[ext_resource type="Script" uid="uid://e3im02nq5cye" path="res://combine_zone.gd" id="10_zone"]
+[ext_resource type="Script" uid="uid://coidnv8b2yvxr" path="res://combine_recipe.gd" id="11_recipe"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_m1xbq"]
 size = Vector3(0.1, 0.1, 0.1)
@@ -29,6 +32,14 @@ script = ExtResource("4_hc3f7")
 closed_pose = ExtResource("6_bdp75")
 metadata/_custom_type_script = "uid://dvobm6vcfnqe8"
 
+[sub_resource type="Resource" id="Resource_recipe_cube"]
+script = ExtResource("11_recipe")
+ingredient_id = &"cube"
+result = ExtResource("8_a0a5b")
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_combine"]
+size = Vector3(0.16, 0.16, 0.16)
+
 [node name="PickableObject" unique_id=1675596942 instance=ExtResource("1_dbtw8")]
 
 [node name="CollisionShape3D" parent="." index="0"]
@@ -49,3 +60,14 @@ hand_pose = SubResource("Resource_qyiot")
 script = ExtResource("7_hc3f7")
 cooking_time = 2.0
 turns_into = ExtResource("8_a0a5b")
+
+[node name="CombinableItem" type="Node" parent="." index="5" unique_id=1265358312]
+script = ExtResource("9_comb")
+id = &"cube"
+recipes = Array[ExtResource("11_recipe")]([SubResource("Resource_recipe_cube")])
+
+[node name="CombineZone" type="Area3D" parent="." index="6" unique_id=1412308162]
+script = ExtResource("10_zone")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="CombineZone" index="0" unique_id=1926800015]
+shape = SubResource("BoxShape3D_combine")
diff --git a/Textures/dev_material_3d.tres b/Textures/dev_material_3d.tres
index c7758b5..1c71701 100644
--- a/Textures/dev_material_3d.tres
+++ b/Textures/dev_material_3d.tres
@@ -10,4 +10,6 @@ uv1_triplanar = true
 
 [resource]
 next_pass = SubResource("StandardMaterial3D_0gbf8")
-albedo_color = Color(0.16497248, 0.49238974, 0.43831292, 1)
+metallic = 1.0
+metallic_specular = 0.0
+roughness = 0.0
diff --git a/Textures/sky/DaySkyHDRI055B.png b/Textures/sky/DaySkyHDRI055B.png
deleted file mode 100644
index a9caa9c..0000000
Binary files a/Textures/sky/DaySkyHDRI055B.png and /dev/null differ
diff --git a/Textures/sky/DaySkyHDRI055B.png.import b/Textures/sky/DaySkyHDRI055B.png.import
deleted file mode 100644
index d43e62d..0000000
--- a/Textures/sky/DaySkyHDRI055B.png.import
+++ /dev/null
@@ -1,40 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://bkybj43vsb8a8"
-path="res://.godot/imported/DaySkyHDRI055B.png-c08c948c1cd92f9f6279c40d25a56f13.ctex"
-metadata={
-"vram_texture": false
-}
-
-[deps]
-
-source_file="res://Textures/sky/DaySkyHDRI055B.png"
-dest_files=["res://.godot/imported/DaySkyHDRI055B.png-c08c948c1cd92f9f6279c40d25a56f13.ctex"]
-
-[params]
-
-compress/mode=0
-compress/high_quality=false
-compress/lossy_quality=0.7
-compress/uastc_level=0
-compress/rdo_quality_loss=0.0
-compress/hdr_compression=1
-compress/normal_map=0
-compress/channel_pack=0
-mipmaps/generate=false
-mipmaps/limit=-1
-roughness/mode=0
-roughness/src_normal=""
-process/channel_remap/red=0
-process/channel_remap/green=1
-process/channel_remap/blue=2
-process/channel_remap/alpha=3
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/normal_map_invert_y=false
-process/hdr_as_srgb=false
-process/hdr_clamp_exposure=false
-process/size_limit=0
-detect_3d/compress_to=1
diff --git a/Textures/sky/DaySkyHDRI055B_16K.tres b/Textures/sky/DaySkyHDRI055B_16K.tres
deleted file mode 100644
index 3fddff1..0000000
--- a/Textures/sky/DaySkyHDRI055B_16K.tres
+++ /dev/null
@@ -1,6 +0,0 @@
-[gd_resource type="Sky" load_steps=3 format=3 uid="uid://acg_omgsazfy"]
-[ext_resource type="Texture2D" uid="uid://acg_o5ei9d13" path="./DaySkyHDRI055B_16K_HDR.exr" id="acg_2cd05t89"]
-[sub_resource type="PanoramaSkyMaterial" id="acg_y6m9krn2"]
-panorama = ExtResource("acg_2cd05t89")
-[resource]
-sky_material = SubResource("acg_y6m9krn2")
diff --git a/Textures/sky/DaySkyHDRI055B_16K_HDR.exr b/Textures/sky/DaySkyHDRI055B_16K_HDR.exr
deleted file mode 100644
index f2bf138..0000000
Binary files a/Textures/sky/DaySkyHDRI055B_16K_HDR.exr and /dev/null differ
diff --git a/Textures/sky/DaySkyHDRI055B_16K_HDR.exr.import b/Textures/sky/DaySkyHDRI055B_16K_HDR.exr.import
deleted file mode 100644
index 7cf4bd9..0000000
--- a/Textures/sky/DaySkyHDRI055B_16K_HDR.exr.import
+++ /dev/null
@@ -1,41 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://c6gfr7v6da0ku"
-path.bptc="res://.godot/imported/DaySkyHDRI055B_16K_HDR.exr-a051741763bd70c547bfd0969bdc0ec5.bptc.ctex"
-metadata={
-"imported_formats": ["s3tc_bptc"],
-"vram_texture": true
-}
-
-[deps]
-
-source_file="res://Textures/sky/DaySkyHDRI055B_16K_HDR.exr"
-dest_files=["res://.godot/imported/DaySkyHDRI055B_16K_HDR.exr-a051741763bd70c547bfd0969bdc0ec5.bptc.ctex"]
-
-[params]
-
-compress/mode=2
-compress/high_quality=false
-compress/lossy_quality=0.7
-compress/uastc_level=0
-compress/rdo_quality_loss=0.0
-compress/hdr_compression=1
-compress/normal_map=0
-compress/channel_pack=0
-mipmaps/generate=true
-mipmaps/limit=-1
-roughness/mode=0
-roughness/src_normal=""
-process/channel_remap/red=0
-process/channel_remap/green=1
-process/channel_remap/blue=2
-process/channel_remap/alpha=3
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/normal_map_invert_y=false
-process/hdr_as_srgb=false
-process/hdr_clamp_exposure=false
-process/size_limit=0
-detect_3d/compress_to=0
diff --git a/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg b/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg
deleted file mode 100644
index 8919564..0000000
Binary files a/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg and /dev/null differ
diff --git a/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg.import b/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg.import
deleted file mode 100644
index 6062472..0000000
--- a/Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg.import
+++ /dev/null
@@ -1,41 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://bd6c12infl67q"
-path.s3tc="res://.godot/imported/DaySkyHDRI055B_16K_TONEMAPPED.jpg-650d4fd5fe07348b21db82dbb2b39a11.s3tc.ctex"
-metadata={
-"imported_formats": ["s3tc_bptc"],
-"vram_texture": true
-}
-
-[deps]
-
-source_file="res://Textures/sky/DaySkyHDRI055B_16K_TONEMAPPED.jpg"
-dest_files=["res://.godot/imported/DaySkyHDRI055B_16K_TONEMAPPED.jpg-650d4fd5fe07348b21db82dbb2b39a11.s3tc.ctex"]
-
-[params]
-
-compress/mode=2
-compress/high_quality=false
-compress/lossy_quality=0.7
-compress/uastc_level=0
-compress/rdo_quality_loss=0.0
-compress/hdr_compression=1
-compress/normal_map=0
-compress/channel_pack=0
-mipmaps/generate=true
-mipmaps/limit=-1
-roughness/mode=0
-roughness/src_normal=""
-process/channel_remap/red=0
-process/channel_remap/green=1
-process/channel_remap/blue=2
-process/channel_remap/alpha=3
-process/fix_alpha_border=true
-process/premult_alpha=false
-process/normal_map_invert_y=false
-process/hdr_as_srgb=false
-process/hdr_clamp_exposure=false
-process/size_limit=0
-detect_3d/compress_to=0
diff --git a/burger.tscn b/burger.tscn
new file mode 100644
index 0000000..e16b47c
--- /dev/null
+++ b/burger.tscn
@@ -0,0 +1,74 @@
+[gd_scene format=3 uid="uid://dpot5qie20vf6"]
+
+[ext_resource type="PackedScene" uid="uid://c8l60rnugru40" path="res://addons/godot-xr-tools/objects/pickable.tscn" id="1_fco8w"]
+[ext_resource type="Texture2D" uid="uid://cexxfyw03hr81" path="res://Textures/1.png" id="2_r8jvx"]
+[ext_resource type="PackedScene" uid="uid://c25yxb0vt53vc" path="res://addons/godot-xr-tools/objects/grab_points/grab_point_hand_left.tscn" id="3_qixic"]
+[ext_resource type="Animation" uid="uid://db62hs5s4n2b3" path="res://addons/godot-xr-tools/hands/animations/left/Grip 4.res" id="4_bw8vh"]
+[ext_resource type="Script" uid="uid://dvobm6vcfnqe8" path="res://addons/godot-xr-tools/hands/poses/hand_pose_settings.gd" id="5_w8sii"]
+[ext_resource type="PackedScene" uid="uid://ctw7nbntd5pcj" path="res://addons/godot-xr-tools/objects/grab_points/grab_point_hand_right.tscn" id="6_mvnl5"]
+[ext_resource type="Animation" uid="uid://d1xnpyc08njjx" path="res://addons/godot-xr-tools/hands/animations/right/Grip 4.res" id="7_wqxjj"]
+[ext_resource type="Script" uid="uid://bs7cxydoxk1cx" path="res://cookable_item.gd" id="8_t4l03"]
+[ext_resource type="PackedScene" uid="uid://cucc3gaqu2nab" path="res://Charcoal.tscn" id="9_x1g8b"]
+[ext_resource type="Script" uid="uid://dounic663dn5q" path="res://combinable_item.gd" id="10_qe0ug"]
+[ext_resource type="Script" uid="uid://coidnv8b2yvxr" path="res://combine_recipe.gd" id="11_dq5p0"]
+[ext_resource type="Script" uid="uid://e3im02nq5cye" path="res://combine_zone.gd" id="12_7llnd"]
+
+[sub_resource type="CylinderShape3D" id="CylinderShape3D_fco8w"]
+height = 0.063323975
+radius = 0.12011719
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_bvwq1"]
+albedo_texture = ExtResource("2_r8jvx")
+
+[sub_resource type="Resource" id="Resource_lc22d"]
+script = ExtResource("5_w8sii")
+closed_pose = ExtResource("4_bw8vh")
+metadata/_custom_type_script = "uid://dvobm6vcfnqe8"
+
+[sub_resource type="Resource" id="Resource_qyiot"]
+script = ExtResource("5_w8sii")
+closed_pose = ExtResource("7_wqxjj")
+metadata/_custom_type_script = "uid://dvobm6vcfnqe8"
+
+[sub_resource type="Resource" id="Resource_recipe_cube"]
+script = ExtResource("11_dq5p0")
+ingredient_id = &"cube"
+result = ExtResource("9_x1g8b")
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_combine"]
+size = Vector3(0.16, 0.16, 0.16)
+
+[node name="burger" unique_id=1675596942 instance=ExtResource("1_fco8w")]
+
+[node name="CollisionShape3D" parent="." index="0"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.0005453825, 0)
+shape = SubResource("CylinderShape3D_fco8w")
+
+[node name="CSGCylinder3D" type="CSGCylinder3D" parent="." index="1" unique_id=59319982]
+radius = 0.1
+height = 0.03
+material = SubResource("StandardMaterial3D_bvwq1")
+
+[node name="GrabPointHandLeft" parent="." index="2" unique_id=1571481674 instance=ExtResource("3_qixic")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.067650706, 0.04601878, -0.08606844)
+hand_pose = SubResource("Resource_lc22d")
+
+[node name="GrabPointHandRight" parent="." index="3" unique_id=514404634 instance=ExtResource("6_mvnl5")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.06531982, 0.042291984, -0.08604182)
+hand_pose = SubResource("Resource_qyiot")
+
+[node name="CookableItem" type="Node" parent="." index="4" unique_id=1139889801]
+script = ExtResource("8_t4l03")
+cooking_time = 2.0
+turns_into = ExtResource("9_x1g8b")
+
+[node name="CombinableItem" type="Node" parent="." index="5" unique_id=1265358312]
+script = ExtResource("10_qe0ug")
+id = &"burger"
+recipes = Array[ExtResource("11_dq5p0")]([SubResource("Resource_recipe_cube")])
+
+[node name="CombineZone" type="Area3D" parent="." index="6" unique_id=1412308162]
+script = ExtResource("12_7llnd")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="CombineZone" index="0" unique_id=1926800015]
+shape = SubResource("BoxShape3D_combine")
diff --git a/combinable_item.gd b/combinable_item.gd
new file mode 100644
index 0000000..27e3f8a
--- /dev/null
+++ b/combinable_item.gd
@@ -0,0 +1,24 @@
+class_name CombinableItem
+extends Node
+
+## Identity of this item, referenced by other items' recipes.
+@export var id: StringName
+
+## Recipes describing what the item holding this component turns into when
+## another item is combined into it while snapped. Recipes are directional:
+## only the snapped (base) item's recipes are consulted.
+@export var recipes: Array[CombineRecipe] = []
+
+
+func _ready() -> void:
+	if id.is_empty():
+		push_error("CombinableItem on ", get_parent().name, " has no 'id' set.")
+
+
+## Returns the scene this item becomes when combined with [param other_id],
+## or null if there is no matching recipe.
+func get_result_for(other_id: StringName) -> PackedScene:
+	for recipe in recipes:
+		if recipe and recipe.ingredient_id == other_id:
+			return recipe.result
+	return null
diff --git a/combinable_item.gd.uid b/combinable_item.gd.uid
new file mode 100644
index 0000000..038dcdb
--- /dev/null
+++ b/combinable_item.gd.uid
@@ -0,0 +1 @@
+uid://dounic663dn5q
diff --git a/combine_recipe.gd b/combine_recipe.gd
new file mode 100644
index 0000000..e7c10ab
--- /dev/null
+++ b/combine_recipe.gd
@@ -0,0 +1,8 @@
+class_name CombineRecipe
+extends Resource
+
+## The [CombinableItem.id] of the item that must be combined into the base item.
+@export var ingredient_id: StringName
+
+## The scene the base item turns into when [member ingredient_id] is combined in.
+@export var result: PackedScene
diff --git a/combine_recipe.gd.uid b/combine_recipe.gd.uid
new file mode 100644
index 0000000..cf3bd5e
--- /dev/null
+++ b/combine_recipe.gd.uid
@@ -0,0 +1 @@
+uid://coidnv8b2yvxr
diff --git a/combine_zone.gd b/combine_zone.gd
new file mode 100644
index 0000000..a097197
--- /dev/null
+++ b/combine_zone.gd
@@ -0,0 +1,103 @@
+class_name CombineZone
+extends Area3D
+
+## Trigger area that lets a snapped item combine with another item pushed into
+## it. The zone only monitors while its owning item is held by an
+## [XRToolsSnapZone]; when an item carrying a matching [CombinableItem.id]
+## enters, the snapped (base) item transforms into the recipe result and the
+## incoming item is consumed.
+
+# The pickable this zone belongs to (its parent).
+@onready var _item: XRToolsPickable = get_parent() as XRToolsPickable
+
+# The base item's recipe data.
+@onready var _combinable: CombinableItem = _find_combinable(_item)
+
+# Guard so a combine only fires once.
+var _combining: bool = false
+
+
+func _ready() -> void:
+	# Detect items whether held (layer 17 "Held Objects") or loose
+	# (layer 3 "Pickable Objects"). Don't advertise a layer of our own.
+	collision_mask = 0b0000_0000_0000_0001_0000_0000_0000_0100
+	collision_layer = 0
+	# Deferred: _ready can run during a physics signal flush (when a combine
+	# spawns the result), where toggling monitoring directly is forbidden.
+	set_deferred("monitoring", false)
+	set_deferred("monitorable", false)
+
+	if not _item:
+		push_error("CombineZone must be a child of an XRToolsPickable.")
+		return
+	if not _combinable:
+		push_error("CombineZone requires a CombinableItem sibling on ", _item.name, ".")
+		return
+
+	_item.picked_up.connect(_on_item_picked_up)
+	_item.dropped.connect(_on_item_dropped)
+	body_entered.connect(_on_body_entered)
+
+
+# Enable the trigger only while snapped into a snap zone (not hand-held).
+func _on_item_picked_up(_pickable: Node3D) -> void:
+	var by := _item.get_picked_up_by()
+	var snapped: bool = by != null and by.has_method("is_xr_class") and by.is_xr_class("XRToolsSnapZone")
+	set_deferred("monitoring", snapped)
+
+
+func _on_item_dropped(_pickable: Node3D) -> void:
+	set_deferred("monitoring", false)
+
+
+func _on_body_entered(body: Node3D) -> void:
+	if _combining or body == _item:
+		return
+
+	var other := _find_combinable(body)
+	if not other:
+		return
+
+	var result: PackedScene = _combinable.get_result_for(other.id)
+	if not result:
+		return
+
+	_combine(body, result)
+
+
+# Transform the base item into [param result], consuming the incoming item.
+func _combine(other_body: Node3D, result: PackedScene) -> void:
+	_combining = true
+
+	var snap_zone := _item.get_picked_up_by()
+	if not snap_zone or not snap_zone.has_method("pick_up_object"):
+		push_warning("CombineZone: base item is not held by a snap zone; cannot combine.")
+		_combining = false
+		return
+
+	# Spawn the result at the base item's location, in world space.
+	var base_transform := _item.global_transform
+	var result_instance: Node3D = result.instantiate()
+	_item.get_tree().current_scene.add_child(result_instance)
+	result_instance.global_transform = base_transform
+
+	# Free the base item and consume the incoming item.
+	snap_zone.drop_object()
+	_item.queue_free()
+	if other_body.has_method("drop_and_free"):
+		other_body.drop_and_free()
+	else:
+		other_body.queue_free()
+
+	# Snap the result into the now-empty zone.
+	snap_zone.pick_up_object(result_instance)
+
+
+# Find a CombinableItem among the direct children of [param node].
+func _find_combinable(node: Node) -> CombinableItem:
+	if not node:
+		return null
+	for child in node.get_children():
+		if child is CombinableItem:
+			return child
+	return null
diff --git a/combine_zone.gd.uid b/combine_zone.gd.uid
new file mode 100644
index 0000000..e8a8294
--- /dev/null
+++ b/combine_zone.gd.uid
@@ -0,0 +1 @@
+uid://e3im02nq5cye
diff --git a/main.tscn b/main.tscn
index a40ff20..6c22ef0 100644
--- a/main.tscn
+++ b/main.tscn
@@ -7,6 +7,7 @@
 [ext_resource type="PackedScene" uid="uid://j7caslh27nor" path="res://Hob.tscn" id="3_lquwl"]
 [ext_resource type="PackedScene" uid="uid://efaec6ymgabo" path="res://Counter.tscn" id="4_7mycd"]
 [ext_resource type="Sky" uid="uid://c1abtpwhdm2d5" path="res://Textures/sky/NightSkyHDRI009_16K.tres" id="6_7mycd"]
+[ext_resource type="PackedScene" uid="uid://dpot5qie20vf6" path="res://burger.tscn" id="8_5vw27"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_vlqg6"]
 size = Vector3(5, 0.1, 5)
@@ -19,6 +20,7 @@ size = Vector3(5, 0.1, 5)
 background_mode = 2
 sky = ExtResource("6_7mycd")
 reflected_light_source = 2
+tonemap_mode = 3
 ssr_enabled = true
 ssao_enabled = true
 ssil_enabled = true
@@ -56,3 +58,13 @@ transform = Transform3D(1, 0, -2.2351742e-08, -2.9802322e-08, 1.0000001, 0, -2.6
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="." unique_id=1177077250]
 environment = SubResource("Environment_bvwq1")
+
+[node name="OmniLight3D" type="OmniLight3D" parent="." unique_id=812168256]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.2856425, 1.4939771, -1.4959787)
+visible = false
+light_color = Color(1, 0.38431373, 0, 1)
+light_energy = 1.784
+shadow_enabled = true
+
+[node name="PickableObject3" parent="." unique_id=1428188966 instance=ExtResource("8_5vw27")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.572903, -1.1190817)
diff --git a/project.godot b/project.godot
index 22756f2..2262e43 100644
--- a/project.godot
+++ b/project.godot
@@ -55,7 +55,6 @@ import/blender/enabled=false
 [rendering]
 
 rendering_device/driver.windows="d3d12"
-renderer/rendering_method="gl_compatibility"
 renderer/rendering_method.mobile="gl_compatibility"
 
 [xr]