I have succumbed to capitalism and opened a store at CafePress.com. The direct link is www.cafepress.com/cctops and if you are wondering the “cc” in “cctops” stands for crazy cool, (I know that’s really lame, by the way). So far I’ve only uploaded one design featuring your favorite math mistresses, $\alpha, \beta, \gamma$. I hope to upload some more elaborate designs soon.