B.
A gift card to Target, Bed, Bath & Beyond, or Linens&Things. Another idea is to get her a gift card for her school's bookstore. Then she can use it buy anything she still needs or use it to buy a treat for herself.
You could also wait until she gets there and send her some popcorn and candy from the Popcorn Company via mail. That is if she is living on campus.
Campus Gear also sells shirts, hats, and lots of other college merchandise. This may be fun and not too expensive to get her something with her college's logo or name on it.
If she is commuting, a gas card would go a long way in helping out.
Hope these help!