This popular experiment from victorian times would have been the main thing back then. A group of people sitting together around a table linking hands in a darkened room work together and ask questions to try and sense, see or hear anything happening either on the table itself or around them in the room. We tend to find that introducing modern technologies such as EMF detectors, audio recorders etc to this experiment gives some interesting results. The group will call out for any form of communication from the spirit world and wait for any response from the other-side.
In the example below, a team were sitting around a table and were asking for some form of communication. On the table, we had placed an audio recorder, a K-II electronic magnetic field meter, a bell, and a REM pod. All of a sudden the team started to get readings through the equipment on the table, which they then used for communication (see video).