What’s the best way to rig bag strap that can act as arms AND tie itself into a knot?

[cchee1111 (Willa)]

Hi everyone, I’m working on a stylized character concept: a living bag whose straps act like arms.

I need to achieve two specific animations:

1. Regular character acting: The straps need to wiggle, wave, and act like flexible organic tentacles/arms.
2. Tying a knot: At the end, the two straps need to tie themselves into a knot. ,I need it is able to stretch (with volume preservation) during the knot-tying action.

I’m still learning more about rigging ：）i only tried to make ik bones so it can act like arms but i would like to tie a knot

Any advice, workflow suggestions, or specific tutorials on this would be highly appreciated! Thanks in advance!

[3dnotguru]

Tentacle rigging in Blender - Complex rig for complex animation