Not-So-Spooky Amumu
Here's to hopes the picture works, Cause the boards are being buggy on me.
Lately, it has become a thing for ghosts to be connected with crying, Most noteworthy examples are Napstablook, from Undertale, as I've tried to post, And characters such as Moaning Myrtle, from the Harry Potter series.
A scene in Undertale shows Napstablook defeat and enemy with it's tears, and seeing this brought to me the idea of how interesting an Amumu skin would be, If he had that same feel. I don't Mean 'Spooky' as in what Gangplank and Fiddle have, I mean it the way Nocturne has it. Simply Mumu running around, with a white sheet over his head, and eye sockets. While an overall ghost theme would be great, simply him floating around with no legs as ghosts do, Either would make for a more then appealing 
skin. He's not new to having skins which drastically change who he is. We now have one if him no longer a mummy at all, but a robot and alongside that, of him as a knight.
Maybe this could be a Halloween skin as Nocturne is, or a year round one like Fiddlesticks has it, But either way it's a skin i'd be eager to see put into the game one day.
EDIT- Beautiful! The imagine worked!