If I may, I’d like to suggest Operation Gratitude.

I actually came across Dan’s Pixel Page in a Google search for sites in support of the troops, to spread the word about this contest: http://dearhero.opgratitude.com/

You write a letter to the troops, and are entered in a contest. Operation Gratitude is run entirely by volunteers, and any donations you make go to covering the cost of shipping care packages to the troops.

If you feel compelled to write a letter or help spread the word, every bit helps.

With thanks,

Jordan