He comes and goes, selling his foraged wares. Raw crystals, wildflowers, bags of berries, boxes of seeds, fruits in baskets, treasures hidden in his clothes. He takes no money, instead bartering for food, cloth, simple containers, that sort of thing.
He is thought to be a spirit – or rather, they are both thought to be spirits, as a tiny mouse companion always travels with him. Both may well have lost their homes, leaving them to travel restlessly, or perhaps they are simply spirits of wind or season. To take such clear animal forms is unusual, but given how they often hide in the shadows and wander the quiet paths, perhaps they prefer the disguise.