Any odd change gets thrown into the pot. These days it's normally the odd one I find on the floor or under the sofa cushions. We rarely use cash now, it's all paid for by card...a sign of the times!
I looked in my wallet yesterday and saw the creased up notes and couldn't remember when someone had last wanted any cash! I love the sound coins make when they fun through your fingers in a cascade.
When my step children lived at home they discarded loose change as if it had no value. I would blitz their rooms and collect the money and claim It as a contribution towards housekeeping. They didn’t argue and it was quite lucrative.
Another great idea for circles. I'm old school (or a fighter of the trend) and really prefer to pay with cash but its getting harder to find places that will accept it