Its purely imagination.
As a kid we did lots of things.
Levitation
Throwing bones (chicken bones)
Crosses upside down
Chanting
My sister even drew a big pentagram on her bedroom floor and we tried summoning a demon.
We spent nights in the graveyard (sometimes with an Ouija Board).
Visited the "local haunted house" at night (went in).
Spent many nights on 'the hill' waiting for the old woman's ghost to pass by with her lantern.
Of all the stuff we did, absolutely nothing actually happened besides scaring ourselves.
It seems the more 'religious' I became the more 'fear' I felt.
When I let go of religion, my fear went away.
Businessman Elijah Bond had the idea to patent a planchette sold with a board on which the alphabet was printed, much like the previously existing talking boards. Bond filed on May 28, 1890 for patent protection and thus is credited with the invention of the Ouija board.
A commercial parlor game, nothing more.
Charles Kennard (founder of Kennard Novelty Company which manufactured Fuld's talking boards and where Fuld had worked as a varnisher) claimed he learned the name "Ouija" from using the board and that it was an ancient Egyptian word meaning "good luck."
Aka product reinforcement marketing.