it sounds cheesy, but get him a stuffed animal from like build a bear with a message inside of it.
or go to joanns (or michaels) and get the little animals you can build yourself, and have the child help.
anything your kids can make for him, or even a bunch of pictures.
My hubby is set to come home shortly after, so I just got him a few of his fav. magazines, and some of his favorite snacks. But we've done a lot of little craft things. He said that he really apreciated the bears that our kids made for him. he said they stay on his bed. It means a lot to the kids too.
at 3:56 PM on Jun. 6, 2009