some dozens lines about PDA/update_overlays and cryopods/MMIs.

code/game/machinery/cloning.dm

@@ -499,7 +499,6 @@
 		gib2.pixel_x = round(cos(world.time * 3))
 		. += gib2
 		. += gib1
-		. += "cover-on"
 	else if(occupant)
 		var/image/occupant_overlay
 		var/completion = (flesh_number - unattached_flesh.len) / flesh_number
@@ -520,7 +519,7 @@
 		occupant_overlay.pixel_x = round(sin(world.time * 3))
 
 		. += occupant_overlay
-		. += "cover-on"
+	. += "cover-on"
 	. += "panel"
 
 /*

code/game/machinery/cryopod.dm

@@ -287,6 +287,7 @@
 #define CRYO_PRESERVE 1
 #define CRYO_OBJECTIVE 2
 #define CRYO_IGNORE 3
+#define CRYO_DESTROY_LATER 4
 
 /obj/machinery/cryopod/proc/should_preserve_item(obj/item/I)
 	for(var/datum/objective_item/steal/T in control_computer.theft_cache)
@@ -308,8 +309,8 @@
 	if(iscyborg(mob_occupant))
 		var/mob/living/silicon/robot/R = mob_occupant
 		if(R.mmi?.brain)
-			cryo_items[R.mmi] = CRYO_IGNORE
-			cryo_items[R.mmi.brain] = CRYO_IGNORE
+			cryo_items[R.mmi] = CRYO_DESTROY_LATER
+			cryo_items[R.mmi.brain] = CRYO_DESTROY_LATER
 		for(var/obj/item/I in R.module) // the tools the borg has; metal, glass, guns etc
 			for(var/obj/item/O in I) // the things inside the tools, if anything; mainly for janiborg trash bags
 				cryo_items[O] = should_preserve_item(O)
@@ -318,7 +319,7 @@
 
 	//Drop all items into the pod.
 	for(var/obj/item/I in mob_occupant)
-		if(cryo_items[I] == CRYO_IGNORE)
+		if(cryo_items[I] == CRYO_IGNORE || cryo_items[I] ==CRYO_DESTROY_LATER)
 			continue
 		cryo_items[I] = should_preserve_item(I)
 		mob_occupant.transferItemToLoc(I, src, TRUE)
@@ -334,17 +335,19 @@
 		if(QDELETED(I)) //edge cases and DROPDEL.
 			continue
 		var/preserve = cryo_items[I]
-		if(preserve == CRYO_IGNORE)
+		if(preserve == CRYO_DESTROY_LATER)
 			continue
-		else if(preserve == CRYO_DESTROY)
-			qdel(I)
-		else if(control_computer?.allow_items)
-			control_computer.frozen_items += I
-			if(preserve == CRYO_OBJECTIVE)
-				control_computer.objective_items += I
-			I.moveToNullspace()
-		else
-			I.forceMove(loc)
+		if(preserve != CRYO_IGNORE)
+			if(preserve == CRYO_DESTROY)
+				qdel(I)
+			else if(control_computer?.allow_items)
+				control_computer.frozen_items += I
+				if(preserve == CRYO_OBJECTIVE)
+					control_computer.objective_items += I
+				I.moveToNullspace()
+			else
+				I.forceMove(loc)
+		cryo_items -= I
 
 	//Update any existing objectives involving this mob.
 	for(var/datum/objective/O in GLOB.objectives)
@@ -405,6 +408,10 @@
 		mob_occupant.ghostize(FALSE, penalize = TRUE)
 
 	QDEL_NULL(occupant)
+	for(var/I in cryo_items) //only "CRYO_DESTROY_LATER" atoms are left)
+		var/atom/A = I
+		if(!QDELETED(A))
+			qdel(A)
 	open_machine()
 	name = initial(name)
 
@@ -412,6 +419,7 @@
 #undef CRYO_PRESERVE
 #undef CRYO_OBJECTIVE
 #undef CRYO_IGNORE
+#undef CRYO_DESTROY_LATER
 
 /obj/machinery/cryopod/MouseDrop_T(mob/living/target, mob/user)
 	if(!istype(target) || user.incapacitated() || !target.Adjacent(user) || !Adjacent(user) || !ismob(target) || (!ishuman(user) && !iscyborg(user)) || !istype(user.loc, /turf) || target.buckled)

code/game/objects/items/devices/PDA/PDA.dm

@@ -9,7 +9,6 @@ GLOBAL_LIST_EMPTY(PDAs)
 #define PDA_SCANNER_HALOGEN		4
 #define PDA_SCANNER_GAS			5
 #define PDA_SPAM_DELAY		    2 MINUTES
-#define PDA_STANDARD_OVERLAYS list("pda-r", "blank", "id_overlay", "insert_overlay", "light_overlay", "pai_overlay")
 
 //pda icon overlays list defines
 #define PDA_OVERLAY_ALERT		1
@@ -33,14 +32,14 @@ GLOBAL_LIST_EMPTY(PDAs)
 	armor = list("melee" = 0, "bullet" = 0, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 100, "acid" = 100)
 	resistance_flags = FIRE_PROOF | ACID_PROOF
 
-
 	//Main variables
 	var/owner = null // String name of owner
 	var/default_cartridge = 0 // Access level defined by cartridge
 	var/obj/item/cartridge/cartridge = null //current cartridge
 	var/mode = 0 //Controls what menu the PDA will display. 0 is hub; the rest are either built in or based on cartridge.
 	var/list/overlays_icons = list('icons/obj/pda_alt.dmi' = list("pda-r", "screen_default", "id_overlay", "insert_overlay", "light_overlay", "pai_overlay"))
-	var/current_overlays = PDA_STANDARD_OVERLAYS
+	var/static/list/standard_overlays_icons = list("pda-r", "blank", "id_overlay", "insert_overlay", "light_overlay", "pai_overlay")
+	var/list/current_overlays //set on Initialize.
 
 	//variables exclusively used on 'update_overlays' (which should never be called directly, and 'update_icon' doesn't use args anyway)
 	var/new_overlays = FALSE
@@ -164,7 +163,7 @@ GLOBAL_LIST_EMPTY(PDAs)
 			overlays_x_offset = new_offsets[1]
 			overlays_y_offset = new_offsets[2]
 	if(!(icon in overlays_icons))
-		current_overlays = PDA_STANDARD_OVERLAYS
+		current_overlays = standard_overlays_icons
 		return
 	current_overlays = overlays_icons[icon]
 
@@ -228,8 +227,11 @@ GLOBAL_LIST_EMPTY(PDAs)
 	if(new_overlays)
 		set_new_overlays()
 	. += new_alert ? current_overlays[PDA_OVERLAY_ALERT] : current_overlays[PDA_OVERLAY_SCREEN]
-	var/mutable_appearance/overlay = new()
+	var/screen_state = new_alert ? current_overlays[PDA_OVERLAY_ALERT] : current_overlays[PDA_OVERLAY_SCREEN]
+	var/mutable_appearance/overlay = mutable_appearance(icon, screen_state)
 	overlay.pixel_x = overlays_x_offset
+	overlay.pixel_y = overlays_y_offset
+	. += overlay
 	if(id)
 		overlay.icon_state = current_overlays[PDA_OVERLAY_ID]
 		. += new /mutable_appearance(overlay)
@@ -1223,7 +1225,6 @@ GLOBAL_LIST_EMPTY(PDAs)
 #undef PDA_SCANNER_HALOGEN
 #undef PDA_SCANNER_GAS
 #undef PDA_SPAM_DELAY
-#undef PDA_STANDARD_OVERLAYS
 
 #undef PDA_OVERLAY_ALERT
 #undef PDA_OVERLAY_SCREEN

code/game/objects/items/devices/PDA/PDA_types.dm

@@ -193,8 +193,6 @@
 /obj/item/pda/curator
 	name = "curator PDA"
 	icon_state = "pda-library"
-	overlays_icons = list('icons/obj/pda.dmi' = list("pda-r-library","blank","id_overlay","insert_overlay", "light_overlay", "pai_overlay"),
-						'icons/obj/pda_alt.dmi' = list("pda-r","screen_default","id_overlay","insert_overlay", "light_overlay", "pai_overlay"))
 	current_overlays = list("pda-r-library","blank","id_overlay","insert_overlay", "light_overlay", "pai_overlay")
 	default_cartridge = /obj/item/cartridge/curator
 	inserted_item = /obj/item/pen/fountain