They still make washboards. Jim Danndy knows.
When I was a teen fresh out of high school, I had a roommate from Luxembourg in flight school. He taught me to rinse out my socks, underwear, and shirt, in the bathroom sink when getting ready for bed. Hang them on the shower rod or similar, and you’re good to go at 7:30 AM. The guy traveled the world for years out of a tiny backpack. He was also wealthy as the Pope. I figured out that frugality sustains the wealthy. Always take a pass on consumerism impulse purchases.