1. Storage cube ottoman - This is the cutest design from The Eager Teacher. These would be ideal tucked under your bed for storage and brought out when you have extra guests or need a foot rest. Two notes - make sure the store bought crates will support your weight and consider a fabric loop/tab to stick out on the side of the cushion so you can easily access the storage space in the crate.
2. Frame jewelry/picture hanger - From the UK, Love Chic Living describes this as a way to make an easy photo collage. I think it's cute as that, but would also be a great way to hang your jewelry, especially if you added a little background cork for earrings. You can find the little "clothes pins" at Michaels.
3. Shoebox Charging Station - I really liked this one from Country Living because (A) it's easy; and (B) it's functional. One thing I would note - you should probably leave the lid of the box open when you are charging your items so it doesn't overheat and be sure to unplug fully charged devices (your manufacturer's instructions for your electronics will tell you that part too). I also would not use this for a full-size laptop because the cords are bulkier and they definitely get hot.
4. Frame organization/note board/calendar - There are a ton of variations of this project, but the concept is pretty simple - picture frame, paper/fabric background in frame and dry erase pen to use on the glass. However, this one from Tangles and Tangents was super cute and had great instructions.
5. Ping pong lights - I'm not a huge fan of the Christmas-lights-in-the-dorm-room look, but I know it's popular and this way of doing it from Say Yes is at least a little original. (I would never put these over a crib, but your bed is OK)
This is just a small sampling of DIY projects I found for your dorm. You can see lots more on my Pinterest board "Dorm DIY"
Happy DIY decorating!