Yeah that’d do it for me.

You see, that glass, or planchette if you really want to give your made up shit some authority, is in fact moved by what is known as the ideomotor effect. Tiny subconscious motor movements that you don’t even register.

Perhaps they’re not enough to fling a glass across a room, leave that to the charlatan running the show, but certainly enough to move it a few inches.

So I repeat, if you want me to believe in your silly little ghost stories, I want that fucker to move by itself.