I've been thinking about various RPG game ideas, and I thought about a game where there aren't any coins. Story-wise, it's assumed the players have a place to stay and the means to survive. Instead, the focus would be on crafting equipment, in a very abstract sense. For example, you can have weapons that have certain properties, such as doing bonus damage against undead. Then, you can use orbs or spirits or talismans to alter those properties. Maybe the weapon can be modified to give bonus accuracy against undead as well, or maybe bonus damage against demons, too. Or maybe it can do bonus damage against enemies that are bleeding. There wouldn't be any money involved in crafting or acquiring loot. It's just what you find and craft. Definitely inspired by Path of Exile, lol.
Another idea I was thinking was that you can craft an "outfit", using 5 parts, head gear, chest gear, hand gear, leg gear and feet gear. Each of the parts can be made of different materials and provide different bonuses to the outfit. That way, you can find and create a variety of different outfit types, which can look very different, too. I'll think about it, and maybe make a larger post about it later on!