Best way to mail to them is to use the Flat rate boxes from the USPS. They have a special rate for military. You will get a military address to send to. He will appreciate packages and letters. We would send our daughter news magazines, the sunday comics, Tea, cause there was plenty of coffee but she's a tea drinker, we sent her favorite candies. Some personal products that she could not find there. My daughter was on a "larger" base so most things she could get herself. She would order herself books and dvd's from Amazon. I sent her a quilt which she loved having with her. Others will have great ideas too!