Features:
– Secondary animation based on centre-of-mass, rotation and gravity
– Spring/dampening system for believable physics-like motion
– Add wind & noise to keep your world alive
– Blend with existing animation to create realistic flowing hair, bouncy tails, flags and much more
– Use hinges, hard and soft limits to control your animation just the way you need it

Check out the details from the Unity Asset Store: https://assetstore.unity.com/packages/tools/animation/jiggle-110185