When we were kids, my mom would put my brother and I in the bathtub to stomp the clothes with our feet. You would only need a plastic tub and you would also get clean feet. Terry
Remember Crocodile Dundee??
Wash'em out in the shower/whatever on Saturday when you take your bath. Put'em on wet/damp (Automatic Air conditioning). Wear them till next Saturday -- repeat. Only need one set of clothes.
Just don't get a camp site too close to me
No, Really, Wash your clothes when you wash/bath however that's done.