The United States national team doing a team juggling drill. Not sure how many juggles they get off this one but it's quite a few.
How many can your team get? What's your team's record? One thing you could also do to make the drill a bit harder is try to keep the ball a bit lower, and not juggling it up so high. Also, you could put restrictions on, say you can only use the instep or the inside of your foot for a few rounds. Take a look.