Updated: Nov 2, 2021
Place a folded card with a name of a spirit and tell the members that in a moment someone is going to discover her name
Ask them to decide together (so they do not say there is a collaborator) which one of them is going to talk to the spirit.
show all the members her drawing.
Ask the chosen volunteer to come by your side and talk to the spirit and ask her what her name is?
Let him concentrate and try to tell everyone whether the ghost is sending him signals
The volunteer will suddenly say with a smile
(Now the volunteer is an instant stooge, make this spectator a star and let him do the job for you)
"It seems the ghost's name is sara"
Let someone else open the note with the name-"sara"