Still haven't actually seen this movie. Guess I'll need to see what I can stream it on.

Inspired by BiancaW's version I made a simple one for when you have the real hardware handy. A #10 pan head screw 2 or 2 1/2" long, preferably stainless and a 1 1/2" split key ring makes for a nice size and weight pendant. Just be careful of the pokey end.