It would be cool if the design were an actual patch, kind of like http://createdigitalmusic.com/2006/06/29/maxmsp-and-circuit-bending-t-shirts/ (but a superior Pd version).  What would be really great would be if people could submit their own patches and have shirts made from them.  I'm sure this would be way too much of a hassle, but I can dream.

Otherwise, I like hardoff's bang-until idea, or a rendition of 4'33" going into a [writesf~] (if you entertain fantasies of being sued by the Cage estate).

--Stefan