kuleczka / Shutterstock
Everybody wants extra money, and opening an Etsy store is one way to make some. Etsy stores sold 4,259,435 items for $101.8 million in April 2013. It's known as a marketplace for handcrafted and vintage items, but craft supplies are also welcome, and the top 10 best-selling sites are typically supply stores. If you want to sell something more creative, though, five categories will get you a piece of the action.