My three year old is helping around the house, and being a good kid in exchange for 'good girl stickers'
She can redeem her stickers for a new toy or anything she wants, 20 stickers for snall toys, 50 for a more substantial one, or more for larger purchase.
We set the price and the issuance of the stickers, of course. 🤣
My 8y/o can redeem her atickers for money, 1000 sats per sticker. Though the criteria for earning stickera for her changes with her current goals.