I could beat this in a day with a pick-and-place robot with a funnel to a Penny coin Hopper. I could do it with dimes quarters whatever I just couldn’t afford to make it this big.
If a bank let me do it inside the bank with their own money as a display I could make it as big as you can imagine or the floor could hold using this method with very little effort. It could run 24/7 as an art piece showing something like the bank’s interest rate as a physical art piece of what happens when you save with them or something