diff --git a/code/game/objects/items.dm b/code/game/objects/items.dm
index 3861c3b9416..46fa4491c6a 100644
--- a/code/game/objects/items.dm
+++ b/code/game/objects/items.dm
@@ -4,6 +4,8 @@
 	w_class = ITEMSIZE_NORMAL
 	blocks_emissive = EMISSIVE_BLOCK_GENERIC
 
+	matter = list(MAT_STEEL = 1)
+
 	var/image/blood_overlay = null //this saves our blood splatter overlay, which will be processed not to go over the edges of the sprite
 	var/randpixel = 6
 	var/abstract = 0
diff --git a/code/game/objects/items/apc_frame.dm b/code/game/objects/items/apc_frame.dm
index b54ea59fc26..ccde6e9c606 100644
--- a/code/game/objects/items/apc_frame.dm
+++ b/code/game/objects/items/apc_frame.dm
@@ -6,6 +6,7 @@
 	icon = 'icons/obj/apc_repair.dmi'
 	icon_state = "apc_frame"
 	refund_amt = 2
+	matter = list(MAT_STEEL = 100, MAT_GLASS = 30)
 
 /obj/item/frame/apc/try_build(turf/on_wall, mob/user as mob)
 	if (get_dist(on_wall, user)>1)
diff --git a/code/game/objects/items/bells.dm b/code/game/objects/items/bells.dm
index c05c7d26863..e9219957e40 100644
--- a/code/game/objects/items/bells.dm
+++ b/code/game/objects/items/bells.dm
@@ -6,6 +6,7 @@
 	force = 2
 	throwforce = 2
 	w_class = 2.0
+	matter = list(MAT_STEEL = 50)
 	var/broken
 	attack_verb = list("annoyed")
 	var/static/radial_examine = image(icon = 'icons/mob/radial.dmi', icon_state = "radial_examine")
diff --git a/code/game/objects/items/trash.dm b/code/game/objects/items/trash.dm
index 356edb5341f..775b27cc080 100644
--- a/code/game/objects/items/trash.dm
+++ b/code/game/objects/items/trash.dm
@@ -8,6 +8,7 @@
 	desc = "This is rubbish."
 	drop_sound = 'sound/items/drop/wrapper.ogg'
 	pickup_sound = 'sound/items/pickup/wrapper.ogg'
+	matter = list(MAT_STEEL = 30)
 	var/age = 0
 
 /obj/item/trash/New(var/newloc, var/_age)
diff --git a/code/game/objects/items/weapons/AI_modules.dm b/code/game/objects/items/weapons/AI_modules.dm
index 58c91b5b46c..e366a3e8ee9 100644
--- a/code/game/objects/items/weapons/AI_modules.dm
+++ b/code/game/objects/items/weapons/AI_modules.dm
@@ -18,6 +18,7 @@ AI MODULES
 	throw_range = 15
 	origin_tech = list(TECH_DATA = 3)
 	preserve_item = 1
+	matter = list(MAT_STEEL = 30, MAT_GLASS = 10)
 	var/datum/ai_laws/laws = null
 
 /obj/item/weapon/aiModule/proc/install(var/atom/movable/AM, var/mob/living/user)
diff --git a/code/game/objects/items/weapons/circuitboards/circuitboard.dm b/code/game/objects/items/weapons/circuitboards/circuitboard.dm
index c1989902a24..a083027713a 100644
--- a/code/game/objects/items/weapons/circuitboards/circuitboard.dm
+++ b/code/game/objects/items/weapons/circuitboards/circuitboard.dm
@@ -16,6 +16,7 @@
 	throwforce = 5.0
 	throw_speed = 3
 	throw_range = 15
+	matter = list(MAT_STEEL = 30, MAT_GLASS = 10)
 	var/build_path = null
 	var/board_type = new /datum/frame/frame_types/computer
 	var/list/req_components = null