I think I found the coolest arcanum trick yet. (No not really but...) I discovered a trick that can duplicate the following items Arrows Batteries Bullets Fuel Basically it can duplicate any stackable item, EXCLUDING money. Well, first you need a pretty decent theiving skills, a shopkeeper that will buy the stackable item, and the item itself. Find a way to get the shopkeeper bankrupt, i.e. steal his gold from him, or unlock his bedroom door and get in his barrel/chest. But be sure to leave at least enough gold in the container to buy at least one of your stackable items. Now go to the shopkeeper and sell ALL of the stackable items you want to duplicate. Most likely, he'll have money to buy some of it, but not all of it. The game then just duplicates the item. When I tried this, sometimes the shopowner keeps the duplicated quantity, or it goes to your inventory. (Did not confirm) If the shopowner keeps the duplicate, go back to the barrel/chest in his bedroom, and take the items you need. NOT TRIED ON PATCHED VERSION!