diff --git a/art/gen/blueprint.png b/art/gen/blueprint.png
new file mode 100644
index 0000000..edf205f
Binary files /dev/null and b/art/gen/blueprint.png differ
diff --git a/art/gen/coal.png b/art/gen/coal.png
new file mode 100644
index 0000000..5b3fde8
Binary files /dev/null and b/art/gen/coal.png differ
diff --git a/code/foundation/src/debug/debug_replay.c b/code/foundation/src/debug/debug_replay.c
index 3d6e151..cfd79a8 100644
--- a/code/foundation/src/debug/debug_replay.c
+++ b/code/foundation/src/debug/debug_replay.c
@@ -175,7 +175,7 @@ void debug_replay_run(void) {
 void ActPlaceIceRink(void);
 void ActSpawnCirclingDriver(void);
 void ActEraseWorldChanges(void);
-void ActSpawnIcemaker(void);
+void ActSpawnCoal(void);
 void ActSpawnChest(void);
 void ActSpawnBelt(void);
 
@@ -226,7 +226,7 @@ void debug_replay_update(void) {
             ActEraseWorldChanges();
         }break;
         case RPKIND_SPAWN_ICEMAKER_ITEM:{
-            ActSpawnIcemaker();
+            ActSpawnCoal();
         }break;
         case RPKIND_SPAWN_CHEST:{
             ActSpawnChest();
diff --git a/code/foundation/src/debug/debug_ui.c b/code/foundation/src/debug/debug_ui.c
index 4d57259..25c555c 100644
--- a/code/foundation/src/debug/debug_ui.c
+++ b/code/foundation/src/debug/debug_ui.c
@@ -137,7 +137,7 @@ static debug_item items[] = {
                 { .kind = DITEM_BUTTON, .name = "place ice rink", .on_click = ActPlaceIceRink },
                 { .kind = DITEM_BUTTON, .name = "erase world changes", .on_click = ActEraseWorldChanges },
                 { .kind = DITEM_BUTTON, .name = "spawn circling driver", .on_click = ActSpawnCirclingDriver },
-                { .kind = DITEM_BUTTON, .name = "spawn icemaker item", .on_click = ActSpawnIcemaker },
+                { .kind = DITEM_BUTTON, .name = "spawn coal lump", .on_click = ActSpawnCoal },
                 { .kind = DITEM_BUTTON, .name = "spawn chest", .on_click = ActSpawnChest },
                 { .kind = DITEM_BUTTON, .name = "spawn belt", .on_click = ActSpawnBelt },
                 { .kind = DITEM_BUTTON, .name = "spawn furnace", .on_click = ActSpawnFurnace },
diff --git a/code/foundation/src/debug/debug_ui_actions.c b/code/foundation/src/debug/debug_ui_actions.c
index 7529882..a4543dd 100644
--- a/code/foundation/src/debug/debug_ui_actions.c
+++ b/code/foundation/src/debug/debug_ui_actions.c
@@ -22,8 +22,8 @@ ActSpawnCar(void) {
 }
 
 void
-ActSpawnIcemaker(void) {
-    ecs_entity_t e = item_spawn(ASSET_DEMO_ICEMAKER, 32);
+ActSpawnCoal(void) {
+    ecs_entity_t e = item_spawn(ASSET_COAL, 32);
     ecs_entity_t plr = camera_get().ent_id;
 
     Position const* origin = ecs_get(world_ecs(), plr, Position);
@@ -62,7 +62,7 @@ ActSpawnBelt(void) {
 
 void
 ActSpawnDurabilityTest(void) {
-    ecs_entity_t e = item_spawn(ASSET_DEMO_ICEMAKER, 1);
+    ecs_entity_t e = item_spawn(ASSET_COAL, 1);
     ecs_entity_t plr = camera_get().ent_id;
 
     Position const* origin = ecs_get(world_ecs(), plr, Position);
diff --git a/code/foundation/src/lists/assets_ids.h b/code/foundation/src/lists/assets_ids.h
index 997266c..51b54cb 100644
--- a/code/foundation/src/lists/assets_ids.h
+++ b/code/foundation/src/lists/assets_ids.h
@@ -17,7 +17,6 @@ typedef enum {
     ASSET_BLUEPRINT,
 
     // NOTE(zaklaus): items
-    ASSET_DEMO_ICEMAKER,
 
     // NOTE(zaklaus): blocks
     ASSET_FENCE,
diff --git a/code/foundation/src/lists/assets_list.c b/code/foundation/src/lists/assets_list.c
index 19402c1..5b6faa5 100644
--- a/code/foundation/src/lists/assets_list.c
+++ b/code/foundation/src/lists/assets_list.c
@@ -15,7 +15,7 @@ static asset assets[] = {
     ASSET_TEX(ASSET_BLANK),
     ASSET_TEX(ASSET_BLOCK_FRAME),
     ASSET_TEX(ASSET_BUILDMODE_HIGHLIGHT),
-    ASSET_TEX(ASSET_DEMO_ICEMAKER),
+    ASSET_TEX(ASSET_COAL),
     ASSET_TEX(ASSET_CHEST),
     ASSET_TEX(ASSET_FURNACE),
     ASSET_TEX(ASSET_BLUEPRINT),
diff --git a/code/foundation/src/lists/items_list.c b/code/foundation/src/lists/items_list.c
index a235b8f..876aa20 100644
--- a/code/foundation/src/lists/items_list.c
+++ b/code/foundation/src/lists/items_list.c
@@ -4,7 +4,7 @@
 
 static item_desc items[] = {
     { .kind = 0, .max_quantity = 0, },
-    ITEM_INGREDIENT(ASSET_DEMO_ICEMAKER, 64, ASSET_FURNACE, ASSET_BELT, 0),
+    ITEM_INGREDIENT(ASSET_COAL, 64, ASSET_FURNACE, ASSET_BELT, 0),
     ITEM_SELF(ASSET_FENCE, 64),
     ITEM_ENERGY(ASSET_WOOD, ASSET_FURNACE, 64, 15.0f),
     ITEM_HOLD(ASSET_TREE, 64),
diff --git a/code/games/sandbox/src/texgen.c b/code/games/sandbox/src/texgen.c
index 791de62..7172ca3 100644
--- a/code/games/sandbox/src/texgen.c
+++ b/code/games/sandbox/src/texgen.c
@@ -23,7 +23,8 @@ Texture2D texgen_build_sprite(asset_id id) {
         case ASSET_BLOCK_FRAME: return GenFrameRect(); break;
 
         // NOTE(zaklaus): items
-        case ASSET_DEMO_ICEMAKER: return LoadTexEco("demo_icemaker");
+        case ASSET_COAL: return LoadTexEco("coal");
+        case ASSET_BLUEPRINT: return LoadTexEco("blueprint");
 
         // NOTE(zaklaus): blocks
         case ASSET_FENCE: return LoadTexEco("fence");
diff --git a/code/games/sandbox/src/worldgen.c b/code/games/sandbox/src/worldgen.c
index 5106d41..6163a8f 100644
--- a/code/games/sandbox/src/worldgen.c
+++ b/code/games/sandbox/src/worldgen.c
@@ -100,7 +100,7 @@ int32_t worldgen_build(world_data *wld) {
     // items
 #if 1
     for (int i=0; i<RAND_RANGE(328, 164); i++) {
-        uint64_t e = item_spawn(ASSET_DEMO_ICEMAKER, 32);
+        uint64_t e = item_spawn(ASSET_COAL, 32);
 
         Position *dest = ecs_get_mut(world_ecs(), e, Position);
         dest->x = RAND_RANGEF(0, world->dim*WORLD_BLOCK_SIZE);