Well, you'll probably hate me for this but if we were all (apart from a few) too fazy to actually complete the task, why not post some of the proposed designs as they are now? Who knows where it may lead.....
I think i'll actually attempt to complete Nimmy's design. I will post it when it has passed the rigourous quality control of ISOMESKA2007 guidelines.... ahem
well, had bb.net still been working, i'd have linked you to the thread.
basically, there was a list of "willing" participants who were to design and make a tee-shirt (using paint, screen printing, markers, aerosols, embroidery, inkjet, glitter, fairies... whatever), and then send it on to another participant in the list. each person would make and send one, and also receive one. it would have been still be cool!