Above: This "Paper Headboard" from I heart Norwegian Wood on Flickr is super easy and super stylish. The headboard design was simply drawn onto and cut out of thick, white poster board and stuck to the wall.
Above: I love the headboard in this bedroom belonging to Flickr user kimhas6cats. It's a different take on using a screen as a headboard. It's her screen that's really the key. It seems that it was just made for hanging things... like scarves, artwork, etc. It's really quite a fabulous idea. And considering I personally own over twenty scarves... I'm keeping my eyes open for a screen like this. Imagine all the other things you could hang from it! So many possibilities.
If you're creative, crafty, and innovative... there is a variety of ways to customize your bed and your dorm in general. But I do stress over and over again that it's soooo important to read your residence hall contract and handbook so that you know what you are allowed to do decor-wise in the dorm and what is prohibited. Every college has different rules. If you don't understand something in the contract or handbook, e-mail your residence hall director or dormitory staff. Be informed, be safe, and be creative. :)