I had to sign for a Certified Mail letter, and it had a KMart gift card in it (it doesn't tell me the amount of the card, but I'm assuming it is one of the $50 gift cards). It had no return address, but it came in a wrapper that had M&Ms on the front and said "Treat Yourself to Something Fun". Like the others, I do not remember what sweeps this came from, but I'm very appreciative anyway. 
