Well in my experience guys aren't like girls when it comes to gifts...if he's like any of the guys I know (my frends, boyfrends or family) he won't mind if he doesn't get a gift. Jus spend some quality time with him before he goes make it special a memory he can hold on to....but gift wise, make it someting pratical that he'll ave a use for and not jus put down in a corner and might forget....you know him better so you should know what he uses regularly.