You tell the girls that they are going on a snip hunt and it must be dark to catch snip.
You give them each one of those penny candy bags and tell them that they must hold it open close to the ground and the snips jump into the bag.
You then supply the leaders with a handful of wrapped candies, I like to use caramels. The leaders mingle among the girls and ask them have you found one yet and when they say no you pop a caramel into their bag and say, "I think I just heard one close your bag quick".
When the girl gets her caramel you give her some of yours so that she can be part of the game too