Pillowcases Anyone?

What we call “paper money” or denominated bills are actually made from 75% cotton and 25% linen fibers.
Although I don’t suggest making sheets or pillow cases out of money, nor do I believe putting money into or under the mattress is a particularly good idea, if you do accidentally leave bills in clothing that you put into a washing machine, just let them dry out – they aren’t going to shred as if they were paper!!