this just works

code/modules/hydroponics/grown/towercap.dm

@@ -27,9 +27,6 @@
 	mutatelist = list()
 	rarity = 20
 
-
-
-
 /obj/item/grown/log
 	seed = /obj/item/seeds/tower
 	name = "tower-cap log"
@@ -275,6 +272,10 @@
 		else if(istype(A, /obj/item) && prob(20))
 			var/obj/item/O = A
 			O.microwave_act()
+		else if(istype(A, /obj/item/grown/log))
+			var/C = /obj/item/stack/sheet/mineral/coal
+			qdel(A)
+			new C(src.loc, 1)
 
 /obj/structure/bonfire/process()
 	if(!CheckOxygen())

code/modules/reagents/reagent_containers/glass.dm

@@ -342,6 +342,13 @@
 		return
 	return ..()
 
+/obj/item/reagent_containers/glass/bucket/wood
+	name = "wooden bucket"
+	desc = "It's a bucket made of wood."
+	icon_state = "bucket_wooden"
+	slot_flags = null
+	item_flags = NO_MAT_REDEMPTION
+
 /obj/item/reagent_containers/glass/beaker/waterbottle
 	name = "bottle of water"
 	desc = "A bottle of water filled at an old Earth bottling facility."