Demonstrate these moves (if you dare!) and then encourage the kids to give 'em a try.
Bend and grasp your ankles, then walk in a line while keeping your knees stiff.
Hold your left ankle in back of your right leg with your right hand. Now hop and turn three times in place without losing your balance! Repeat with the other leg.
Stand on one foot and hold the other foot behind your back with the opposite hand. Now try to touch the bended knee to the ground -- and stand up again -- without losing your balance.
Stand on your right leg. Now try to touch your forehead with your left big toe. Repeat with the other leg.
Lie face down on a soft surface. Grab your ankles and try to rock your body back and forth on your thighs and chest.
Get in a squatting position, grab both ankles and try to hop forward several times.
Ride an "air bicycle." Lie on your back, raise both feet in the air, place your hands on your hips and support your weight on your shoulders and elbows. Now pump your feet and "ride" the air bicycle.
Sit on the ground with knees bent and feet close to the body. Now try to stand up. (Hint: Rock back and forth for momentum.)
Do a "crab walk." Squat, then place both hands behind you, palms on the floor. Try walking forward in this position.
Stand like a stork: Place one foot against the inside of the opposite knee. See how long you can stand in that position!