If you received a gift card this year that you have zero plans on using try exchanging it for something that you really want. There are several sites that you can sell your card on trade it.
Cardpool is an online gift card exchange service. Cardpool will buy your unused gift cards for cash. The only catch is you'll have to wait until someone else buys it. You can also trade it for another card but you'll lose a small portion of the value.
Raise allows you to sell your card yourself. Sellers list their cards and raise takes a small cut of what it sells for.
Gift Card Granny allows you to sell or trade your card.
Card Cash is the other re-seller (similar to Cardpool). It'll buy your unwanted card or trade you for a small fee.
You can also choose to donate the card to charity at www.Charitygiftcertificates.org