Android Users.......Show Us Your Cases

So I've never cased a phone before (I have insurance for that). But I recently got a GS4* and realised:

A. I want to keep it pristine in case the Nexus 5 blows me away and I want to sell it

B. While it's pretty ergonomic, the back does get slick in warm conditions, and the phone is almost too thin really

So I've cased it. And it got me wondering...what does everyone else do, whatever phone you might have?

Oh...and pictures or it never happened :)

* I did actually flirt with a black HTC One because it looks awesome...but realised I'd have to case it which seemed pointless. On the GS4 however the case actually improves the looks :)