I think it's cute to do a "basket" type gift.
examples:
-shower caddy with loofa, shampoo, conditioner, body wash, razors, flip flops, robe.
-pampering: assorted nail polish colors, nail files, nail buffers, cotton balls, nail polish remover
-laundry: folding laundry basket, detergent, stain remover, dryer sheets, towels, sheets, rolls of quarters
-coffee maker, travel mugs, assorted coffees/teas
If you want to go the more practical route, there are many dorm room check lists:
http://www.bedbathandbeyond.com/store/registry/CollegeChecklistPage
http://www.officedepot.com/a/browse/college/N=5+534016/?cm_mmc=Google-_-NB_BTS_College_HighSchool_MB-_-College_Checklist-_-%2bcollege%20%2bchecklist_49571642-VQ2-g-VQ6-24405097670-VQ15-1t1-VQ16-c
http://www.dormsmart.com/Dorm-Room-Checklist.html