Vintage Iron Ons
One of my favorite sites to scope out lately is RetroDuck.com. They not only make some really funny retro T shirts, they also carry a huge selection of vintage iron-ons which you can have put on your choice of new T shirts, for a really good price. I know how hard it is to come across these iron-ons, so it amazes me the selection that they have (we find some occasionally and have them professionally put on vintage T shirts - available in our Reware section). My favorite on RetroDuck is the Dracula Sucks T shirt. Added bonus: They are also located in Michigan!