Race to the Whistle Game 
This Game is meant for Boy Scouts.
Decide for yourself if it is appropriate for your younger scouts or not.
Required:
one whistle
Instructions:
All scouts line up across one end of a large field.
All scouts are blindfolded and on their honor.
Leader stands at center of far end of field.
To start the game, the leader blows a whistle. Scouts try to be the first to reach the leader.
The leader should occasionally blow the whistle again to re-orient wandering scouts.
It would be a good idea to have spotters walking along the edges of the field in case scouts wander too far off course.
Give points to patrols as the first member of their patrol reaches the leader.