My sister and her two college student kids have figured out just what almost any dorm room could use to be more organized and efficient. She offers her suggestions in this article Dorm Room Organizing Ideas From Someone Who Knows.
By starting out with folding shelving, closet organizers, bath totes (like these from Bed Bath & Beyond), and hooks, you'll be on the road to a well-organized home-away-from-home.
About.com's Guide to Furniture, Fred Albert, has some great tips on finding dorm furniture. Check them out!