There are a few options but they are pretty radical departures. There are a few grocery stores, typically natural food co-op type places in the US, that will have no packaging. These places you weigh out your peanuts and put them into your own bag, or they might have burlap or similar. The issue is more when you get into wet things. Meat, cheese, etc. these can be wrapped in wax paper. But thats not going to work if you have a central butcher factory.