I second the recommendation of Swagbucks, I use it, and then I sell the gift cards I get from there on Ebay. :3

(You'd be surprised how much more people are willing to pay for something; just sold a $10 Amazon gift card for $17! xD)

You could also look at Fiverr, although I didn't get any success in this avenue, if you have a good (Or crazy) talent, people will pay you to do it there.

(I'd post a link if I could, but I'm under ten posts, but you can Google it and it'll be right on top. :3)