Trade between villages predominantly revolves around agriculture, fabrics and raw materials.
The walking wood are not innately curious. They prefer not to travel long distances. As such, trade is limited to neighboring societies, who divide incoming goods into what's explicitly needed, and then pass the remainder on to the next village.
They have no form of currency, so this is solely an exchange of goods.
Hidden Hollow’s largest exports are fruit, paper and pottery. All trade is conducted via their river.