Dorm room with no sink or water? help? Homemade sink?

I had this problem many years ago. So I went down to my local marine suppliers and bought myself a small stainless steel sink complete with hand pump. Then bought a kitchen base unit ,small section of worktop, cut a hole in the top ,dropped in the sink, fitted hand pump. Then in the base unit, put in 2 containers, one for freshwater, the other for waste. I also fitted casters to the base unit enabling me to position it anywhere in the room. The small sink came with a flexible hose which went straight into the waste container. The hand pump also came with flexible holes which went in to the fresh water container. Also fitted door to base unit, which made for a neat and tidy piece of equipment. Hope this helps.