tshirt + text-service
. the tshirt has a slogan and instructions to text a keyword to a short text #. the texter gets a canned response (or your latest twitter), you get the texter's number. The slogan and the keyword are customizable. interesting: linking a physical good to a service, and to bring low-investment interaction from the web to, uh, meatspace. on the other hand, I'd be wicked embarrassed to wear or respond to one.