i LOVE the idea of getting your users to design the shirts... Also, given your market (pot smokers), you should look towards impulse buy items. T-Shirts are f

i LOVE the idea of getting your users to design the shirts... Also, given your market (pot smokers), you should look towards impulse buy items. T-Shirts are fantastic -- marijuana supporters love to buy "420" and "legalize it" type gear. As someone running that site, don't you have some insight into what your target market likes? Beyond the "ice cream" level stuff. Alternatively / complementary, couldn't you sign up for an affiliate program with one of the online glassworks shops? I bet you'd make more money that way than doing adverts for other people. Your site is so targeted, and with such a well defined user in mind (the "stoner" image is self-applied and identifying for users) that you should 100% be doing affiliates for online glass works, or t-shirts and knick-knacks (just think of things that would "blow people's minds" for under $10).