EDIT: Wow, didn't expect this to be so popular! I'm seeing a lot of requests for shirts, prints, etc. I'll see what I can do!
DOUBLE EDIT: For the time being, I threw together some items on (shirts, buttons, stickers) www.geeksgetit.com. I don't know that they've actually gone through yet, but feel free to take a look. I'll have to see what I can do about getting it made as prints/signs. Anyone have recommendations?
EDIT 3: Prints are available now. Click up there for more information! Since it was suggested in the comments, I cut down the web address size on a number of the other designs. There is no web address on the prints.