Alabama themed cell phone case I crocheted for my friend. It has a white button holding it closed on the other side. The pattern for it & the elephant applique are both free on ravelry.com
crochet phone case cat
Gleeful Things » Tutorial Round Up
crochet and sewing - Pink Milk: Cherry On Top - A Crochet Phone Cosy with pattern in cross-stitch - cute - or you could just crochet the pattern on... - includes lovely clear tutorial on working both sides of starting chain to form oval base
Free pattern for a customizable phone case (in Turkish)
I love this idea, it would keep my phone so much cleaner... and I can't imagine what else I could make these for.