For the last 2 months, I've been working on a new site,
tindie.com (an etsy for electronics - buy & sell homemade gadgets, kits, or parts). So far there have ~80 projects listed like
heatsinks for raspberry pi's &
a robot that plays angry birds. Over this time, the site has processed $1,500+ in orders, and has done pretty well.
If you've got a project that you'd like to sell, definitely post it. It's free to list an item, and the site only takes 5% from a sale (covers hosting & credit card processing fees).
As of today, I've decided to focus on the project fulltime. So if anyone has any feedback or ideas, definitely let me know!
emile