https://blenderartists.org/t/wiggle-bones-a-jiggle-bone-implementation-for-2-8/1154726?u=peetie

I'm sure we've all missed having this wonderful add-on in the newer versions of Blender, so in this video I show you how to get it going 3.3 LTS. (In the video I'm specifically using Blender 3.31)