This is a useful game for randomly dividing participants into groups
Instructions:
Ask participants to pretend that they are getting into taxis, which can hold only a certain number of people, such as two, four, or eight (as many as you need).
The facilitator chooses a random number of drivers (as many as you need groups) who are then going to drive their taxis around the room.
When the taxis stop, which is announced by the facilitator, participants have to run to get into a taxi before anyone else.