Our SPS chapter is getting t-shirts. Some of you may enjoy the design even if the units don't work out right. It's the solution that's important :). Feel free to modify and use for your own groups. I've never seen this design anywhere, so as the designer I'm "declaring" it to be Public Domain now. (The <U|Physics|U> on the front is from Union University Physics. Invariant under unitary transformation.) The pictures probably won't show up in this email, but you can retrieve the design and view and edit it.