This is a Zelda themed custom Ouya case. Its fancy!

If you do not have access to a 3d printer you can buy a print off shapeways!

https://www.shapeways.com/model/1752301/zelda-ouya-case.html?li=search-results&materialId=6

plop the button in the spring(smooth side of spring should be facing up against the underside of the button, give the button a quarter of a turn to lock it in place, then plop the spring in the lid, then the ouya into the case, plop the lid on the case and whamo! all done.