Ouija board
From Tardis Wiki, the free Doctor Who reference
A ouija board was an object supposedly used to contact the dead. As a child, Tim Leicester and some of his friends used one. It scared his friend so much he ran out into the street and was hit by a car and killed.
As an adult, Tim once again participated in using a ouija board with some friends from work. (PROSE: Séance, or Smoking is Highly Addictive, Don't Start)
In 2010, in Cardiff, in the pub The House of the Dead, Evadne Wintergreen was conducting a seance; the words "JAC" were spelled out on a Ouija board, announcing the arrival of Captain Jack Harkness. (AUDIO: The House of the Dead)