Sam often uses one, and refers to it as a "Talking Board".
Spirits that were contacted through the board were either manifesting around the general area, as with the case of Dean when Sam tried to communicate with him, or when the spirits are finely attuned to a certain object or person, as the case when Bela Talbot uncovered information on the Rabbit's Foot, and Gordon's transformation into a vampire.
- Season 2
- Season 3
- Season 7