Always keep plenty of soap, shampoo, and face wash, and any other shower accessories you need. Keep plenty of towels; you won’t want to use the same towel everyday. Make sure you have enough toothpaste, toothbrush(s), acne wash, brushes, combs, ear swabs, and anything else you would use at home. Remember that you should be doing everything else you did at home; you are just changing your location.
For keeping your soaps, washes, and more organized I recommend two types of products. A shower tote is very important to have. As seen in the two pictures below there is a plastic shower tote and mesh shower tote. I favor the plastic shower tote since the mesh shower tote holds more water that ends up on you dorm floor.