This is a decent one. When you buy 1 Land O Lakes butter with olive oil, you can send in for a coupon for a free (Up to $2.99) tub of the same stuff. Print the form here
Purchase must be between 2/6/11 and 4/30/11.
*These type of FREE coupons come in handy when buying fillers if you are trying to hit a certain dollar amount on a purchase to get a discount.