I have several caches of medium and smaller bills. They sit there idle for long times, but sometimes you urgently need them and feel so happy you have them. So, during this Corona mess we used cards to pay most things but cash was needed at times.

Our daughter, who is staying with us after giving birth, made a few online orders and some of the delivery guys didn't have enough change. So, I put some medium and smaller bills in the kitchen in case she needed some.