diff --git a/code/game/objects/items/cigs_lighters.dm b/code/game/objects/items/cigs_lighters.dm
index 220b44ab6fb..e965b5809d2 100644
--- a/code/game/objects/items/cigs_lighters.dm
+++ b/code/game/objects/items/cigs_lighters.dm
@@ -585,6 +585,7 @@ CIGARETTE PACKETS ARE IN FANCY.DM
 	smoketime = 0
 	chem_volume = 200 // So we can fit densified chemicals plants
 	list_reagents = null
+	w_class = WEIGHT_CLASS_SMALL
 	///name of the stuff packed inside this pipe
 	var/packeditem
 
diff --git a/code/game/objects/items/crayons.dm b/code/game/objects/items/crayons.dm
index 2adb64c4b79..50588e959e8 100644
--- a/code/game/objects/items/crayons.dm
+++ b/code/game/objects/items/crayons.dm
@@ -662,6 +662,7 @@
 	lefthand_file = 'icons/mob/inhands/equipment/hydroponics_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/hydroponics_righthand.dmi'
 	desc = "A metallic container containing tasty paint."
+	w_class = WEIGHT_CLASS_SMALL
 
 	instant = TRUE
 	edible = FALSE
diff --git a/code/modules/modular_computers/computers/item/tablet.dm b/code/modules/modular_computers/computers/item/tablet.dm
index ced85bfd63c..938a64aaead 100644
--- a/code/modules/modular_computers/computers/item/tablet.dm
+++ b/code/modules/modular_computers/computers/item/tablet.dm
@@ -52,6 +52,8 @@
 	. = ..()
 
 	if(is_type_in_list(W, contained_item))
+		if(W.w_class >= WEIGHT_CLASS_SMALL) // Anything equal to or larger than small won't work
+			return
 		if(inserted_item)
 			to_chat(user, span_warning("There is already \a [inserted_item] in \the [src]!"))
 		else