The Container Store's Command Adhesive Strips
These were a must have in taking my son to college last week. The strips work beautifully for hanging pictures, message board, posters, etc. Dorms don't allow nails or screws in the walls and these adhesive strips were strong enough and durable enough to hold just what we needed. Check details for weight and other considerations. There are a multitude of designs to choose from.
Perfect for hanging pictures in a dorm where you can't put holes in the wall.