An idea has been on my head for awhile, to animate my own dreams.
Long ago I wrote down some of them (although I haven’t done that in several years) and I wanted to do a test, animating the easiest one I can remember.

In this dream it happened basically what you re seeing. It was really weird to still feel my detached fingers moving away, and in the dream I just thought it was normal (but weird)
Anyhow, here it is. Rendered in Blender (EEVEE)