planchette

noun

1. a small, heart-shaped board supported by two casters and a pencil or stylus that, when moved across a surface by the light, unguided pressure of the fingertips, is supposed to trace meaningful patterns or written messages revealing subconscious thoughts, psychic phenomena, clairvoyant messages, etc.

noun

1. a heart-shaped board on wheels, on which messages are written under supposed spirit guidance