I caught the tail end of a conversation about a gentleman living in his rv on the road all the time....he was describing how he did his laundry.
He got a storage tub with a lid, filled it with water, detergent and his dirty clothes, put it in the shower and hit the road! When he stopped at his destination, he took them out, rinsed them off and hung them up.....Clean clothes!!!!!!! lol
Necessity is the mother of invention
Have a good day!