Suzi at My Own Thoughts has the address to send letters of support and care packages to the 3/25th Marines who've lost so many of their brothers. From a Marine Corps Captain:
...It meant a great deal to us to know how much support we had from folks back home during those trying days. Many politicians and tv types talk about how their thoughts and prayers are with our troops there, but I believe that is not enough.
Actions of course always ALWAYS speak louder than words. If you can find it in your day please send them a box or even a letter to just let them know we have not forgotten them and that we hold them in th highest place of honor. 3/25 will probably be in Iraq until October. It takes about two weeks for mail to get to them.
You can send all sorts of stuff like books, magazines, dvds, candy, food, etc in a simple US Postal service flat rate box for less than 8 bucks. That's about two lattes at Starbucks. Most importantly you can also send a note or card for 37 cents and let a few American patriots know how much they mean to us.
The address for 3/25 is:
Adopt a Marine
c/o Capt Kasparian
3/25 H&S Co
FPO, AE 09509-2110
Suzi has a lot more from a few personal emails from Marine families.