Divide the group into groups of two, three, or four. Assign an animal to each group (Horse, cow, sheep, rooster, etc.) Blindfold everybody, and spread them to different parts of a large room (like a gymnasium). At your signal, each group member must find each other based only on the noise that particular animal makes. It is hilarious listening to the vocal bedlam as people stunble around crowing, barking, etc. As each group meets up, they can remove their blindfolds. Keep the game going until the last group is the only one left. Everyone else gets a kick out of watching the others.