Nice donut in the demo, but would love to see a human model for a more fun demo :) Ideally with a proper weight map for the different body parts too, seems well done enough that you could get really close to something realistic.
Wish author wasn't such a chicken if it was intended for body parts, show the demo in the README, I think it's still legal isn't it?
There are multiple geometries in the demo, the last is a highly detailed human anatomy. https://xloveee.github.io/jiggle-physics/