Outside of specific fields/circumstances and/or a generous interpretation of just what counts as part of the supply chain, it’s basically impossible. The moment even the simplest items, like surplus vegetables grown and harvested by a slightly above subsistence level farmer on traditionally owned land, get carried in a truck, or even a bicycle, your supply chain explodes into a vast interconnected web of circular links. Which trucks trucked the parts to make the trucks to truck the parts to make the trucks that trucked the parts to make the trucks that… and so on.