A big success last summer! This is a weekly allowance system. The disks are “dollars” (half disks are half-dollars). The canister is the Parent Bank, and the red one is the Child Bank.
Every week my son started with a baseline allowance that he paid out and/or added to, and we settled up at the end of each week.
The bright crocheted money kept things lighthearted and actual money rarely changed hands. In fact, he usually wanted to save them up, not spend them, because he liked stacking them.