The
ouija board, also called a spirit board or talking board, has been pretty common in occultism since the 19th century, to the point that it has a short entry in GURPS Horror for 4e (on p47), probably due to it's use in a number of horror films, books, and TV series (and people who do believe in spooks, many of whom generally recommend avoiding these things entirely, as they 'could invite
anything in').
I found myself wondering if anyone has had characters using them in their games; not necessarily the PCs, either: some horror films (and some alleged possession cases in RL) start with a character getting possessed by something that was attracted to a ouija board, and you could potentially do a game where the
PCs are spirits who were drawn to a group of teenagers playing with a spirit board in an abandoned house... along with Something Else.
Also sort of wondering if anyone has done house rules for spirit boards.