Teach the Controversy! It's not an Etsy shop, but this website has some of the greatest T shirt designs I have ever seen! I had to buy three as soon as I found the website. Here are some of my favorite designs. A cool thing about this site is the way you can customize stuff. You can chose your own colors for all the screenprinting, change the gender of the scientists, and even resize things! My T shirt with a cowboy riding a germ has a green germ! I usually fit well in ladies larges, but the ones from this site seem to run very large. I should have gone with a medium or even a small!