Imagination Exercise can be fun, especially when you are creative. Try different kinds of exercise, like sports. Pretend you are kicking a goal during a soccer game, running a track race, catching a football or hitting a home run. Or, you can pretend you are an animal and act like a hungry bear, a graceful gazelle, a swift stallion, a worker bee or a waddling duck. Do things kids like If kids aren't having fun, they won't want to play.
Kids love obstacles.
Anything can be used for an obstacle course. Milk jugs can be filled with sand to use as weights or set up for kids to run around. Nerf balls can be thrown through hula hoops or into buckets. Kids can walk with nerf balls between their legs or roll the ball on the ground with their nose. A city map is a good way to keep track of kids and see how far they can walk.