This Activity is meant for Boy Scouts, Webelos scouts.
Decide for yourself if it is appropriate for your younger scouts or not.

Large inflated beachball
small ball - nerf ball or tennis ball

More difficult than Group Juggling.

Stand in a circle.
One scout starts with both balls.
He hits the beachball high into the air and hands or tosses the small ball to another scout.
Only the scout with the small ball can hit the beachball.

Try for a Double Juggle team record.

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To make it a bit harder, the scout tossing the small ball needs to call out the name of who he is throwing it to.