My wife and I were getting a prescription filled at CVS. The receipt comes back with a coupon: $3.00 off your next $15.00 purchase.

So we looked around for things at good prices. Campbell's Kettle Creations: 99 cents, good price around here. My wife's sugar-free candies: 79 cents apiece, better than she usually gets. Used our credit card for possible UPromise.com savings AND got an extra rewards rebate AND stocked up enough soup to burn through the $3 coupon.

We were so enthralled with all of this, we left the prescription on the counter and had to drive back to get it. OOPS!