Coinstar is offering a deal right now. When you change your $40 into a gift card (instead of cash), you get an additional free $10 gift card. If you're planning to buy a card anyway, get it at Coinstar and get yourself a free $10 card.
Don't have change? Go to the bank and get $40 in quarters and then go to coinstar and get your free $10. :D
Go HERE for more info. Deal expires 12/6!!