Copper or copper wire scrap.
Aluminum, copper, refined edible oil, og vegetable oil, sugar, coffee, and all sorts of wooden structures..
Non ferrous metals, metal powders, rare earth metals, metals and alloys, niobium, rhenium, nickel, wolfram, tin, nichrome, vanadium, aluminum, brass, copper, titanium, molybdenum, tantalum, magnesium, zirconium.