So I submitted a tee shirt designs to be voted in the Gmail 
Threadless and hopefully printed. Here are my tees:
And my wife ones:
If I get enough high scores the shirt will be printed and sold from the site and I will win some prizes including iPhone. Take a look at it and if you like it, sign up and give it a score.
BTW, Threadless has a lot of really quite cool tees created by the really talented people. So surely you can find some good for you there!