For this game you will need music and a passable witch.
Have everyone stand in a circle, start the music and pass the witch. This is a great way to work in some spatial learning. Pass the witch to the left/right. Have every face the same direction – Pass the witch between your legs to the person behind you. You can do anything you wish here. You can even change it up with each round.
When the music stops the person with the witch can cast a spell on the members of the opposite sex. For example, a girl can make the boys spin in 3 circles. A boy can make the girls flap their arms like a dragon.
Be sure you have a camera available, because I am sure you will get tons of great photo opps!