So there's an item you want or there's many supplies you need. Unfortunately you don't have enough money (or whatever) to afford anything. So what do you do? You go grinding for money. Basically you go around killing various Money Spiders and Pinata Enemies, as well as searching many places in the world for money. Or perhaps go item farming to sell certain items. Doing too much of this may lead to Money for Nothing. Sister trope of Level Grinding and Item Farming.