need some advice

I need some opinions and advice. I have been invited to a graduation party for the daughter of a friend and former coworker. I suppose that she and I are friends of a sort (although I have no idea how she would describe it), in that the last few times I have been at their house, she has hung out and talked with her mom and I for a while. So I would like to get her a graduation gift. I would like to get her something nice, and something a little more personal than money. I don't think she has made her final decision on college, but she's looking at pre-med at a couple of area colleges. So, any ideas on what to (or not to) get?