I haven't tried this myself, but apparently you can get an awesome deal on cereal with a gas rebate. Don't ask me details... go read about it here: http://fabulesslyfrugal.com/2011/03/get-up-to-50-of-free-fuel-with-kelloggs-rebate.html
Yes, I realize the post was written back in March....but I guess it is still good.
