If you're a Sam's Club Member (or know someone who is and will go with you to do the deal), now thru Dec. 26th, Sam's Club has a deal where if you buy a $100 Gift of Membership card, you will get a $25 Complimentary gift card free.
The $100 Gift of Membership is marketed towards you purchasing a Sam's Club Membership for someone else for Christmas, but, in the fine print on the back of the card it does say "This card may be used for purchase of merchandise at Sam's Club or any retail format of Wal-Mart Stores, Inc. in the U.S. and Puerto Rico."
So it is really a traditional gift card and can be use to buy stuff.
So say you were planning to buy a ps3 or a TV or even a hundred or so bucks worth of toys at Walmart. Take that money and go to Sam's and buy, in separate transactions, $100 Gift of Membership cards, and get $25 free each time.
If you were planning on spending $400.00 at Walmart (Or even Sam's), you buy (4) $100 GoM cards, which you can still spend on whatever you were originally planning to buy, and get $100 FREE in gift cards!
Read about it, and others' experiences with this deal Here.