Originally Posted by ChrisV
ebay is a good way, but you have to be dedicated to it. I have my online T shirt and gift ship: http://www.cafepress.com/adesso
and it makes a good side income for me, but you either have to be creative, or affiliate yourself with someone who is. I do all my own design work, so take all the profit. But I literally don't do anything but come up with the designs and wait for my checks.
It's not enough to stop working yet, but I could see how it could be.
I actually made an order from cafepress a few months ago. All were Supra related clothes, and a tile (dunno why). They had a small issue shipping the things to me, to a point where the package kind of disappeared (?). Even so, the sales representative over the phone was kind enough to look everything up within a few minutes, verified my identity, and placed a completele new order for me, free of charge, no questions asked. The shipping was slow to PR, but he said it was in part UPS's fault (I took their word for it since they were so polite and diplomatic). So even if they screw up (or someone else other than them), they will pick up the slack and solve everything for you, without penalizing the client (you).
So cafepress is definitely a great place to go, both to make a business and to get yourself some extra goodies. One of the ladies from the supramania forums sells her stuff there (she was the one that showed me the site). I'm gonna have to have a look at ChrisV's list later on. Christmas is coming