Take your unit for a walk though your community
Before leaving assign points to items they may see along the way. What you pick will vary based on your community and/or program work associated with the walk.
Very uncommon things (example: a classic car) – 8 pts
Uncommon things (example: 7 or more birds flocking together) – 3 pts
Common things (example: an oak tree) – 1 pt
Have a each patrol assigned to a Guider. The Guider will need a list of girls in that patrol. When a girls sees an item from the list, they quietly report the fact to their assigned Guider. The Guider keeps track of the points on her list. At the end of the walk, the points are tallied and a winner declared.