ghosts/observers can possess mice at will

code/modules/mob/dead/observer/observer.dm

@@ -153,6 +153,38 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 		verbs += /mob/proc/ghost
 	del(src)
 
+/mob/dead/observer/proc/become_mouse()
+	set category = "Ghost"
+	set name = "Become mouse"
+	//locate an empty mouse
+	if(client && client.holder && client.holder.state == 2)
+		var/rank = client.holder.rank
+		client.clear_admin_verbs()
+		client.holder.state = 1
+		client.update_admins(rank)
+
+	var/list/eligible_targets = new()
+	for(var/mob/living/simple_animal/mouse/M in world)
+		if(!M.ckey)
+			eligible_targets.Add(M)
+
+	var/mob/living/simple_animal/mouse/target_mouse
+	if(master_controller.game_ticker.spawn_vermin)
+		if(eligible_targets.len)
+			//grab a random existing one
+			target_mouse = pick(eligible_targets)
+		else
+			//make a new mouse
+			target_mouse = new(pick(master_controller.game_ticker.vermin_spawn_turfs))
+
+	if(target_mouse)
+		client.mob = target_mouse
+		verbs += /mob/proc/ghost
+		target_mouse.real_name = src.name + " (as mouse)"
+	else
+		client << "\red Unable to become a mouse!"
+	del(src)
+
 /mob/dead/observer/proc/dead_tele()
 	set category = "Ghost"
 	set name = "Teleport"

html/changelog.html

@@ -58,6 +58,14 @@ should be listed in the changelog upon commit though. Thanks. -->
 
 <!-- To take advantage of the pretty new format (well it was new when I wrote this anyway), open the "add-to-changelog.html" file in any browser and add the stuff and then generate the html code and paste it here -->
 
+<div class="commit sansserif">
+	<h2 class="date">4 August 2012</h2>
+	<h3 class="author">Cael_Aislinn updated:</h3>
+	<ul class="changes bgimages16">
+		<li class="rscadd">Ghosts and observers can now possess mice and inhabit the station as mortals once more. Be warned, in this form you will be unable to be cloned! (you can, however, jump back into ghost form as you like)</li>
+	</ul>
+</div>
+
 <div class="commit sansserif">
 	<h2 class="date">2 August 2012</h2>
 	<h3 class="author">Cael_Aislinn updated:</h3>