make a unique shirt, or buy somebody else’s
There are a raft of custom shirt websites, but few as cool as Threadless. Their design philosophy is rather different, in that they accept submissions for new shirts and decide what to produce in some quasi-democratic fashion. Every seven days new shirts are chosen and rotated into stock, in limited runs that often sell out quickly to people of intelligent or eclectic fashion sense. Well, in t-shirts, anyway.
Anybody with a graphics program can make a design, and anyone with a web browser can vote on it, and anybody with money can buy it on a shirt.
They also sell gift certificates.