I just contributed and signed on to lay a wreath at Stones River National Battlefield on December 16.
The missus and I attended last year, and it was a moving and satisfying experience.
If you want to sponsor a wreath (or several), you can click here [Wreaths Across America] where you can also sign in to be part of the ceremony if you choose so.
The state police escort the wreath convoy here where they are made. Its awesome to see