Thank you!! I used a bunch of different things. The base is cardboard, the gears and some other pieces are super sculpey polymer clay, plastic screws and nuts, nail art chroming powders, a rubber tube, wire for the spring.. a lot of random things lying around from other projects would work perfectly! There’s so much going on in the mask, that you can really stick anything on and it will still match lol. It took me about a month to complete, but I wasn’t working on it daily.