I have a similar problem, but a wiggle expression will not work. Mine is a plant (a long stem with leaves on it) which someone is holding. I have their hand tracked, so I have the position and rotation to make the plant look like it’s in their hand. What I’d like is to have the plant bend and sway in a natural, springy way as he moves/rotates his hand. I have the plant as one layer with 5 puppet pins along the stem. I then have 5 nulls that the puppet pins are each linked to with expressions. I’ve found that if I use a delay expression on each subsequent null going up the plant, it can have a nice wave effect. This is with the top parented to the next one down, and so on. But what I need is the rotation for the first null. I could hand-animate it, but it’s time consuming and I have 10 of these to do.
Suggestions?