The one instrument none of them utilize is the spirit board.
For one, they prove nothing as opposed to video documentation, EVP's and spirit box sessions. The other problem is people that use those in houses where spirits dwell often open a porthole they fail to close, basically inviting in lower "crap" entities that feed off negative energies. Call them demons if you want, but that may give them too much credit.
They predate Christianity and only started the demon thing after Christianity.
They are liars that feed off intimidation.
If you live with any spirits in your own place, it's best to NOT attempt communication as it always ends up being a bad decision.
Most of the time not much will go on, by mid January most Ouija boards will be stashed in the closet, but a very small percentage may well experience more than they bargained for.