I am a big fan of Rakuten, formally Ebates. This site can be used on line and in many stores, There is NO cost to you and you earn money back. I have collected over $800 in the last years of being a member. I have a referral code that will give you a dollar perk and will send one to me too! There is no catch with this, I am surprised more do not use it! Here is the link to get started.