If he is a computer fan, you can get this cool mp3 player made here in swiss, you could get in the states cheaper.
It comes with a cable which you can hook up to the computer, put the MP3's on a MD and later you can switch it to a CD.
Also you can hook it up to your stereo.
Since i am 18, i would go for cologne's,
Shades would be nice - personally like Turtleshell ray bans - but are very expensive.
Also, computer games, if he is fan.
If he is a car fan, get him NFS3 the porsche edition.
Its a computer game.
Or you could contribute to your brothers fund for a car.
CROIRE A L'INCROYABLE