I was doing some work at the local caravan park this week. When I went in to leave the invoice, I noticed the owner had a basket of $1.00 coins on the table.
He had just emptied the coin boxes from the washing machines in the laundry. Naturally I offered to count and bag them for him. There was $839.
Scored at least two good ones of every circulation year, including commemoratives 9More of many years). Plus a 2008 rabbit ears.

He has offered to let me know every time he clears the machines so I can have first crack at them.
Next stop, the local laundromat. I don't know if they have coins or tokens -hopefully coins. I know the owner of that place too.
Worth checking for similar in your location, especially if you live in a small town.
Jeff