Nice idea! Thanks; definitely going to make something similar for myself.
Hmm... perhaps with suction caps for feet. And a body/legs that can fold up when not in use. Also a... no, that's getting too complicated.
Otoh, going simpler, I wonder why this (see pic) never occurred to me either? I often use pliers with a rubber band to hold things. Just never thought of holding a scope probe that way.