Teenage boy valentines day gift ideas?

So my bf and I have been dating for about 6 months now, he's fifteen, I have no clue what to get him for valentines day! For his birthday I burned him a cd so that option is basically shot. I want to stay away from the candy and teddy bears thing. We are both camera shy so we don't have any good pic of the two of us. I want to get him something special, but am totally drawing a blank. I'm willing to spend up to sixty or seventy bucks.... Please help!