Fiddling

I've been thinking a lot about the human tendency to fiddle with things, and how it often manifests in musical expression. So, I've started a list of tactile "things" that are the most fun for me. The first thing that came to mind was using the fingers of one hand to push the fingers of the other hand back, and vise versa. I'd like to try to replicate that movement.

I don't really want to make anything like the instrument in this video. However I find inspiration in its playfulness.