The Invisible Friend
This is an idea for large events (see
CI for large events).
Each participant randomly picks in the list the name of another participant. So, if person A has picked up the name of person B, then person A becomes the invisible guardian angel ('invisible friend' if we don't want it to have a religious connotation) of person B.
No one knows who is the invisible friend of who, participants keep it secret among themselves. You know who you are protecting and helping, you don't know who is doing that for you.
This game introduces an interesting context of good will and intention. People are inclined to pay more attention to what happens around them, be sensitive to synchronicities. It generates more cross-contextual situations and encounters.
Helping tools:
You may use this website to draw the invisible friend using emails:
http://www.amigoinvisibleonline.com