This page always lists the most up to day Free Redbox Movie Rental Codes, just check this page before you rent a DVD at Redbox, there are new codes almost every week. You could literally never Pay for DVDs again if you follow this page and use all the free codes!
Don't get hand-cramps from writing all of your thank-you notes! Why not convert your handwriting into a font?! It costs about $10, but I'm filing this away for future reference... This would be really cool! :)