Two-Feet-Deep has released a series of iPhone hard cases. There are a number of designs (100+), with each case running around $16.00.
I just thought the language below was fairly amusing. I'd have to say that if the below image is copyright protected by anyone, it would be Banksy. Banksy's website does say that you can "Please feel free to make your own Banksy merchandise for non commercial purposes". (Oh...and the Panda with the guns isn't a Banksy)