Obi Bone is a new type of actor included with Obi Rope 6.3. (soon to be released). It joins the ranks of Obi Rope and Obi Rod, allowing you to endow any bone hierarchy with particle-based rod physics: you can use it to simulate character braids, tails, arms, wings, breasts, or any other appendage.
It's a full animation-driven simulation with advanced features such as coupled bending and torsion, two-way interaction with rigidbodies and all other Obi actors, collision against all collider types, external forces and inertia, etc.
If you already own Obi Rope, updating to 6.3 and obtaining Obi Bone is free!