People are paired up, and learn each others names, then split - one person blindfold. The other calls their name from across the room, they move towards their name, possibly meeting other people on the way.

Variations: The person calling can move, can stay silent for a while, you can do this on the floor, crawling, or standing.

You can also vary what is called, for example I've seen it done with names; with animal noises; or with paired words -e.g. Bread and Jam; King and Queen; Life and Death etc.