If their passions is more for art, multimedia, or music consider the ipad mini or any other tablet. Theses days teens are more attracted to technology and even associate their interest in nature, art, photography, and music to technology.
My 16-year-old son loves cash and gift cards to places that he frequents. That way he can pick out what he likes with the cash/cards and get what he likes. I don't have to worry about getting him something he doesn't like.