College beds are often longer than a standard twin. A comforter you won't mind throwing away after four years. Keep the peace with your roommate and neighbors. You have now entered the world of lines and bureaucracy. The more you hang, the less you'll have to attempt to cram in the small college-provided dressers.
Wire hangers take up less room than bulky plastic ones.
The college-provided trash cans are not big enough. Clothes you can layer. Temperatures vary widely from halls to classrooms to social gathering spots.