Ive made a mobile sink with a laundry tub, use a 5gal beverage cooler for a hot water tank, pumped through a marine foot pump, tubing goes up some pvc to a hose faucet. I attached a touch free soap dispenser, and a pvc bar for paper towels. It sits on a 2x4 on the back legs and a 2x8 on the front to hold it steady and for the pump. It works awesome! No need for electricity or water connections, just use a propane burner to heat up the water and stays hot for hours, and a 5gal bucket to catch the gray water.