Sometimes you pay for something in cash and get 19 cents in change. Who wants to deal with those coins? No one.
Fig 1: Coins and a dollar bill. This is what people in olden times used to pay for things.
Instead of having to deal with annoying change in your pocket, or leaving it as a bizarrely unwanted tip at the DMV, how about getting your change back in delicious candies? These could be generic candies (chocolates, cashews) or perhaps a company could sponsor them and provide them at a discount to the government (“each M&M is worth 2 cents, each Red Vine is worth a quarter”).
Fig 2: When given the opportunity to pick between $1.62 in change OR eighty-one delicious candy-coated chocolates, the choice is clear!
PROS: No more annoying jangle of low-value coins in your pocket or purse. Saves the nation’s mint from having to create low-value coins that no one wants (so it’s more eco-friendly as well).
CONS: If peanuts are used for change, every cash transaction would become a Dangerous Game of Death for anyone with peanut allergies.