If you have a Hot Wheels fan in your house (like I do), you might want to become a fan of Hot Wheels on Facebook. They say there will be a special "thank you" next week to all of their fans! This could be really cool!
Swagbucks is totally free! It is a search engine that rewards you for searching! While you search you earn swagbucks that can be traded in for all sorts of things. My favorite is Amazon gift cards! Totally legit! Try it out!