To obtain the thin metal adjustable straps, I spray painted silver paint onto some paper.
After the pain was dried, I carefully used a pair of scissors to cut up very thin strips.
At first, I tried using a razor, but it turned out the razor tended to grab the paper and pull it.
As you can see from the last photo, the strips were very thin. Had to really adjust my eyes just to see if I was cutting anything at all.