diff --git a/code/controllers/subsystems/player_tips.dm b/code/controllers/subsystems/player_tips.dm
index 8afa6cc5b5..60b99598a4 100644
--- a/code/controllers/subsystems/player_tips.dm
+++ b/code/controllers/subsystems/player_tips.dm
@@ -7,6 +7,17 @@ SUBSYSTEM_DEF(player_tips)
 	flags = SS_NO_INIT
 
 	var/static/datum/player_tips/player_tips = new
+	var/list/current_run = list()
 
-/datum/controller/subsystem/player_tips/fire()
-	player_tips.send_tips()
+/datum/controller/subsystem/player_tips/fire(resumed)
+	if(!resumed)
+		if(!player_tips.check_next_tip())
+			return
+		player_tips.set_current_tip()
+		current_run = GLOB.player_list.Copy()
+
+	for(var/mob/target_mob in current_run)
+		current_run -= target_mob
+		player_tips.send_tip(target_mob)
+		if(MC_TICK_CHECK)
+			return
diff --git a/code/game/mecha/space/hoverpod.dm b/code/game/mecha/space/hoverpod.dm
index fcb9fee999..10190d4e84 100644
--- a/code/game/mecha/space/hoverpod.dm
+++ b/code/game/mecha/space/hoverpod.dm
@@ -31,6 +31,10 @@
 	ion_trail = new /datum/effect/effect/system/ion_trail_follow()
 	ion_trail.set_up(src)
 
+/obj/mecha/working/hoverpod/Destroy()
+	QDEL_NULL(ion_trail)
+	. = ..()
+
 /obj/mecha/working/hoverpod/moved_inside(var/mob/living/carbon/human/H as mob)
 	. = ..(H)
 	if(.)
diff --git a/code/game/objects/items/devices/communicator/communicator.dm b/code/game/objects/items/devices/communicator/communicator.dm
index 7a3923675e..f6dacf765e 100644
--- a/code/game/objects/items/devices/communicator/communicator.dm
+++ b/code/game/objects/items/devices/communicator/communicator.dm
@@ -311,9 +311,9 @@
 	QDEL_NULL(exonet)
 
 	last_camera_turf = null
-	qdel(cam_screen)
+	QDEL_NULL(cam_screen)
 	QDEL_LIST(cam_plane_masters)
-	qdel(cam_background)
+	QDEL_NULL(cam_background)
 
 	return ..()
 
diff --git a/code/modules/client/client procs.dm b/code/modules/client/client procs.dm
index 4859e7c1d1..d17a045b95 100644
--- a/code/modules/client/client procs.dm	
+++ b/code/modules/client/client procs.dm	
@@ -420,6 +420,8 @@ GLOBAL_LIST_INIT(blacklisted_builds, list(
 	if(holder)
 		holder.owner = null
 		GLOB.admins -= src
+	if(skybox)
+		QDEL_NULL(skybox)
 
 	QDEL_NULL(loot_panel)
 	..()
diff --git a/code/modules/events/carp_migration.dm b/code/modules/events/carp_migration.dm
index 11cb296944..dc1bc82116 100644
--- a/code/modules/events/carp_migration.dm
+++ b/code/modules/events/carp_migration.dm
@@ -70,10 +70,10 @@
 
 // Spawn a single carp at given location.
 /datum/event/carp_migration/proc/spawn_one_carp(var/loc)
-	var/mob/living/simple_mob/animal/M = new /mob/living/simple_mob/animal/space/carp/event(loc)
-	RegisterSignal(M, COMSIG_OBSERVER_DESTROYED, PROC_REF(on_carp_destruction))
-	spawned_carp.Add(M)
-	return M
+	var/mob/living/simple_mob/animal/carp_to_spawn = new /mob/living/simple_mob/animal/space/carp/event(loc)
+	RegisterSignal(carp_to_spawn, COMSIG_OBSERVER_DESTROYED, PROC_REF(on_carp_destruction))
+	spawned_carp.Add(carp_to_spawn)
+	return carp_to_spawn
 
 // Counts living carp spawned by this event.
 /datum/event/carp_migration/proc/count_spawned_carps()
@@ -83,10 +83,10 @@
 			. += 1
 
 // If carp is bomphed, remove it from the list.
-/datum/event/carp_migration/proc/on_carp_destruction(var/mob/M)
+/datum/event/carp_migration/proc/on_carp_destruction(datum/source, mob/carp_to_remove)
 	SIGNAL_HANDLER
-	spawned_carp -= M
-	UnregisterSignal(M, COMSIG_OBSERVER_DESTROYED)
+	spawned_carp -= carp_to_remove
+	UnregisterSignal(carp_to_remove, COMSIG_OBSERVER_DESTROYED)
 
 /datum/event/carp_migration/end()
 	. = ..()
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index a254b1844b..eb2bbee59e 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -1469,6 +1469,8 @@
 	if(screen_icon)
 		owner?.client?.screen -= screen_icon
 		UnregisterSignal(screen_icon, COMSIG_CLICK)
+		var/datum/hud/HUD = owner?.hud_used
+		LAZYREMOVE(HUD?.other_important, screen_icon)
 		QDEL_NULL(screen_icon)
 
 /datum/component/character_setup/proc/create_mob_button(mob/user)
diff --git a/code/modules/mob/living/simple_mob/subtypes/mechanical/mecha/hoverpod.dm b/code/modules/mob/living/simple_mob/subtypes/mechanical/mecha/hoverpod.dm
index f1fabed013..fcae342279 100644
--- a/code/modules/mob/living/simple_mob/subtypes/mechanical/mecha/hoverpod.dm
+++ b/code/modules/mob/living/simple_mob/subtypes/mechanical/mecha/hoverpod.dm
@@ -41,6 +41,10 @@
 	ion_trail.start()
 	return ..()
 
+/mob/living/simple_mob/mechanical/mecha/hoverpod/Destroy()
+	QDEL_NULL(ion_trail)
+	. = ..()
+
 /mob/living/simple_mob/mechanical/mecha/hoverpod/Process_Spacemove(var/check_drift = 0)
 	return TRUE
 
diff --git a/code/modules/mob/new_player/logout.dm b/code/modules/mob/new_player/logout.dm
index 0b1c17ced8..1963a4fa7d 100644
--- a/code/modules/mob/new_player/logout.dm
+++ b/code/modules/mob/new_player/logout.dm
@@ -2,7 +2,6 @@
 	ready = 0
 
 	GLOB.new_player_list -= src
-	QDEL_NULL(lobby_window)
 	disable_lobby_browser()
 
 	..()
@@ -17,6 +16,10 @@
 	return
 
 /mob/new_player/proc/disable_lobby_browser()
+	if(lobby_window)
+		lobby_window.unsubscribe(src)
+		lobby_window.close()
+		lobby_window = null
 	var/client/exiting_client = persistent_client.client
 	if(exiting_client)
 		winset(exiting_client, "lobby_browser", "is-disabled=true;is-visible=false")
diff --git a/code/modules/player_tips_vr/player_tips_controller_vr.dm b/code/modules/player_tips_vr/player_tips_controller_vr.dm
index cb702728d4..a20efefe9f 100644
--- a/code/modules/player_tips_vr/player_tips_controller_vr.dm
+++ b/code/modules/player_tips_vr/player_tips_controller_vr.dm
@@ -14,29 +14,31 @@ Controlled by the player_tips subsystem under code/controllers/subsystems/player
 	var/list/HasReceived = list() //Tracking who received tips. We let them know how to turn them off if they're not on this list. Stores CKeys until round-end.
 
 //Called every 5 minutes as defined in the subsystem.
-/datum/player_tips/proc/send_tips()
-	if(world.time > last_tip_time + tip_delay)
-		last_tip_time = world.time
-		tip_delay = rand(min_tip_delay, max_tip_delay)
-		var/tip = pick_tip("none") //"none" picks a random topic of advice.
-		var/stopWhile = 0
-		while(tip == last_tip) //Prevent posting the same tip twice in a row if possible, but don't force it.
-			tip = pick_tip("none")
-			stopWhile = stopWhile + 1
-			if(stopWhile >= 10)
-				break
-		last_tip = tip
-		for(var/mob/M in GLOB.player_list)
-			if(M.client?.prefs?.read_preference(/datum/preference/toggle/player_tips))
-				if(!M.key && !(M.key in HasReceived))
-					to_chat(M, span_warning("You have periodic player tips enabled. You may turn them off at any time with the Toggle Receiving Player Tips verb in Preferences, or in character set up under the OOC tab!\n Player tips appear every 45-75 minutes."))
-					HasReceived.Add(M.key)
-				tip = GLOB.is_valid_url.Replace(tip,span_linkify("$1"))
-				to_chat(M, span_notice("[tip]"))
-
+/datum/player_tips/proc/check_next_tip()
+	if(world.time <= last_tip_time + tip_delay)
+		return FALSE
 
+	last_tip_time = world.time
+	tip_delay = rand(min_tip_delay, max_tip_delay)
+	return TRUE
 
+/datum/player_tips/proc/set_current_tip()
+	var/tip = pick_tip("none") //"none" picks a random topic of advice.
+	var/stopWhile = 0
+	while(tip == last_tip) //Prevent posting the same tip twice in a row if possible, but don't force it.
+		tip = pick_tip("none")
+		stopWhile = stopWhile + 1
+		if(stopWhile >= 10)
+			break
+	last_tip = tip
 
+/datum/player_tips/proc/send_tip(mob/target_mob)
+	if(!(target_mob.client?.prefs?.read_preference(/datum/preference/toggle/player_tips)))
+		return
+	if(target_mob.key && !(target_mob.key in HasReceived))
+		to_chat(target_mob, span_warning("You have periodic player tips enabled. You may turn them off at any time with the Toggle Receiving Player Tips verb in Preferences, or in character set up under the OOC tab!\n Player tips appear every 45-75 minutes."))
+		HasReceived.Add(target_mob.key)
+	to_chat(target_mob, span_notice("[GLOB.is_valid_url.Replace(last_tip, span_linkify("$1"))]"))
 
 /mob/living/verb/request_automated_advice()
 	set name = "Request Automated Advice"
@@ -47,4 +49,4 @@ Controlled by the player_tips subsystem under code/controllers/subsystems/player
 	if(choice == "cancel")
 		return
 	var/static/datum/player_tips/player_tips = new
-	to_chat(src, span_notice("[GLOB.is_valid_url.Replace(player_tips.pick_tip(choice),span_linkify("$1"))]"))
+	to_chat(src, span_notice("[GLOB.is_valid_url.Replace(player_tips.pick_tip(choice), span_linkify("$1"))]"))
diff --git a/code/modules/tgui/modules/appearance_changer.dm b/code/modules/tgui/modules/appearance_changer.dm
index b2f51b609f..cc0a8a0819 100644
--- a/code/modules/tgui/modules/appearance_changer.dm
+++ b/code/modules/tgui/modules/appearance_changer.dm
@@ -102,9 +102,9 @@
 		cut_data()
 
 /datum/tgui_module/appearance_changer/Destroy()
-	qdel(cam_screen)
+	QDEL_NULL(cam_screen)
 	QDEL_LIST(cam_plane_masters)
-	qdel(cam_background)
+	QDEL_NULL(cam_background)
 	return ..()
 
 /datum/tgui_module/appearance_changer/tgui_act(action, list/params, datum/tgui/ui, datum/tgui_state/state)
diff --git a/code/modules/tgui/tgui_window.dm b/code/modules/tgui/tgui_window.dm
index 4c2b285cae..995376fb5a 100644
--- a/code/modules/tgui/tgui_window.dm
+++ b/code/modules/tgui/tgui_window.dm
@@ -221,6 +221,9 @@
  */
 /datum/tgui_window/proc/close(can_be_suspended = TRUE)
 	if(!client)
+		release_lock()
+		status = TGUI_WINDOW_CLOSED
+		message_queue = null
 		return
 	if(can_be_suspended && can_be_suspended())
 		#ifdef TGUI_DEBUGGING
diff --git a/code/modules/vore/eating/living_vr.dm b/code/modules/vore/eating/living_vr.dm
index dbc43bf047..bcbba04bd1 100644
--- a/code/modules/vore/eating/living_vr.dm
+++ b/code/modules/vore/eating/living_vr.dm
@@ -1307,6 +1307,8 @@
 	if(screen_icon)
 		owner?.client?.screen -= screen_icon
 		UnregisterSignal(screen_icon, COMSIG_CLICK)
+		var/datum/hud/HUD = owner?.hud_used
+		LAZYREMOVE(HUD?.other_important, screen_icon)
 		QDEL_NULL(screen_icon)
 	remove_verb(owner, /mob/proc/insidePanel)
 	QDEL_NULL(owner.vorePanel)
diff --git a/tgui/packages/tgui/interfaces/PreferencesMenu/CharacterPreferenceWindow.tsx b/tgui/packages/tgui/interfaces/PreferencesMenu/CharacterPreferenceWindow.tsx
index cb72cf858f..32d4d54555 100644
--- a/tgui/packages/tgui/interfaces/PreferencesMenu/CharacterPreferenceWindow.tsx
+++ b/tgui/packages/tgui/interfaces/PreferencesMenu/CharacterPreferenceWindow.tsx
@@ -9,9 +9,9 @@ type Data = {
   categories: string[];
   selected_category: {
     name: string;
-    items: any;
+    items: Record<string, unknown>;
   };
-  selected_category_static: any;
+  selected_category_static: Record<string, unknown>;
 
   saved_notification: BooleanLike;
   preview_loadout: BooleanLike;