http://anysoldier.com/
Do you have some extra holiday cards? Baked a few to many cookies? Have some extra toothpaste, paper, pens, phone cards, lip balm, etc etc etc laying around?
Why not send them to a soldier? This site has addresses of men and women serving our country with posted requests of what they are needing. If you can help fill the request apply for the address. If all you can do is send a card or a letter, then do that too. It helps build morale!
Just thought I'd pass this along in hopes that maybe you too will be inspired to send a little something too.