I need some good Ideas for a fitness week for my school Grades pk-6.?

we used to have Field Day. there would be several activities planned. each group would have a certain amount of time to do the activity before they went on to the next. you could have jump ropes, relay races, long jump, whatever you want. throw a frisbee through a hula hoop. who can hula hoop the longest? the team or cl with the most points wins a party or gets to watch a movie. kids all over are getting fatter because they sit inside playing video games or watching tv instead of going out and playing. good luck!