upgrades to your items like hammer upgrade so it takes less hammers to make an item or to the forge so it heats ingots faster and like maybe items to increase customers patience time by like 1% or so (also to make it clear not the level up to your character thats already in game like items that are with money to skill points like a better hammer a better forge some decos to make look pretty so they become more patient like that also maybe something extra on the blacksmithing)