Wouldn’t it be cool if we didn’t use dollars, Euros, yen, or pesos any more? Instead, we could use oranges. You would go buy a car with, say, 800 oranges. You would bring them in a wheelbarrow, or you could bring some oranges in juice form. If you were out camping you wouldn’t have to catch your dinner, you could eat some cash! It makes perfect sense if you don’t think about it.
Wallets would have to be altered though. Most wallets can’t hold multiple oranges so they would have to be changed into knapsacks. This means an entirely new market. This idea also means that people will get more exercise because they’d be carrying around more weight. It also promotes healthy eating.