Something for my boyfriends 18 birthday?

Alright the bf is turning 18 on Saturday and I have no idea what to get him. He is going into the Army in a month so I want to get him something that maybe he can take with him but I dont want to be all "gushy" with the present. He just isnt that kind of guy. I have already got him two shirts and he is not much a jewlery person. Be nice to get some guy views please and thank you.