I like to buy iPhone cases in bulk on eBay, they are super cheap and even more fun to decorate and even sell. Today, I was on crafty excitement overload when I used Aleene's Fabric Fusion Peel & Stick Sheets to make an array of different designs! The fun is that you can start with one case and just keep layering the fabric whenever you tire of the look!
Here is a video tutorial I made that show how easy this craft is