Many teams have a player run court they call the Kangaroo Court to hand out “fines” for infractions like missing a sign, making an error, and so on.
In the workplace, such a program could encourage fellow employees to contribute donations to a fund that would benefit an employee incentive program or a raffle. Something that may work in lieu of money may be entering people’s names in a drawing for a prize at the end of the period. You could get one entry for every time you do something very well, and lose one entry when you make a mistake. You can also enter entries when you see someone succeed and reward them for their honor.