Gift cards are a great present... but what to do with them when they are spent?
ReUp the account- a lot of gift cards can be recharged- Starbucks comes to mind... so register that gift card and re-charge it!
Ice Scraper- leave a used gift card in your car- they make great Ice Scrapers for Icy windows.
Guitar Picks- I have a fancy hole punch that punches out guitar picks out of expired credit cards, gift cards, store member value cards. The punch is available at PickPunch.com.
Dress- Lizzie Gardiner, who won an Oscar for best costume design for "Priscilla, Queen of the Dessert" designed and wore a dress made out of American Express credit cards to the ceremony.