I understand how this would drive you crazy, but please don't assume that a coin washer will deter a mother from making sure her kids have clean clothing. 

People can discuss clipping coupons, buying soon to expire meat and bread, 2nd hand clothes, dumpster diving, yard sale bargain hunting and creative ways to re-purpose broken furniture thier neighbors are disposing of.

That being said, I drive an older beat up car, bring a sack lunch everyday to work, and haven't bought any clothes in years.  

My parents came to America as refugees escaping with Vietnam War with nothing but the cloth on their backs.

My parents had a treadmill in the bedroom that was used to dry clothes.

Everyone puts on their clothes the same way each day.I do know people of huge wealth.

I go to goodwill to buy my work clothes.

My car is 7 years old, my house is modest, I don't own a piece of clothing over $100.I get the opportunity to spend quality time with my loved ones and have memories that will far outweigh cash in the bank.  

People had one set of clothes.

@Tenzin Wangchuk 35% is pretty good (lots of folks saving 0% out there...)One nice method I once heard of getting other people on board with an idea is to look at their top priorities (for example, being able to buy good food, nice clothing, splurge on things here and there and the security of having extra money to spend, etc. ) and try to show them the benefit of the concept to their priority.