Become a fan of Skittles on Facebook and look for the tab that says "Coupon the Rainbow". You can print a coupon for a free pack of Skittles when you buy one. You should be able to press back and print the coupon twice!
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!