[TheThinkTank] merch for your shop...what works and doesn't work?

a few of us at community cycles are looking into getting some items professionally printed. shirts, bike/skull caps, stickers...

what kinds of items have you all found are popular, or not so popular?

we'll be in touch with peacesupplies, as i know he's friends with and does the printing for bicas.

any leads or suggestions you all can make as far as things that have worked well or weren't worth your time or money?

if the person from freeride who worked on the bikebike!08 merch reads this, where did you get the hats to print onto? does anyone else have a source for blank screenable hats?

thanks!

josh.