If you are a hardware or gadget freak who loves hand-made open source hardware, you may want to take a look at inMojo. It is very much like the handmade item marketplace named Etsy, but will give you a very specific audience. InMojo is a great way to find great parts for upcoming projects, and even sell creations of your very own.
There are a number of special features for sellers such as attribution tracking, licensing and marketing support, special offers for hackerspaces, students, and much more. In a quick summary, this looks to be the product of someone who was terribly fond of Etsy, electronics, and Instructables. If you’re about to embark on a new DIY project, I’d suggest giving InMojo a look.