Directions: 

Challenge participants to keep all balloons (1+ per person) in the air.  This gets the group moving and cooperating. Once they've got the hang of it, make it harder by adding in more balloons or placing restrictions e.g., no hands to keep balloons up.  Ask participants to keep juggling the balloons, but to sort them into colors (works best with large groups).

Source: 

Submitted by: Kim Buchanan