Advice needed!

My little bro is graduating from high school. I can't believe he's old enough to be graduating from high school, but that's beside the point. Do you have any idea what a big sister is supposed to get her little bro for graduating? Right now it looks like he'll be commuting to Penn State Berks from Collegeville (about a 45 minute drive) but he might also rent an apartment. If he were moving out of the house I'd definitely get him some badass college-apartment stuff - like a TV. But if he's not moving out of the house he doesn't need a tv so I have no idea what to do. I'd give him cash, but I'd rather he did something useful with it than spend it on chicks.