Celebrate Hacky Sack Day
There are also a variety of other gmaes to play with a hacky sack such as
Killer Hack- a certain amount of people must touch the hack and then anyone can grab it out of the air and whip it at another person in the circle. If you are hit you are out for that game.
Power Hack- Everyone tried to hit the hacky sack as high into the air as possible, and make amazing saves to keep it going.
4 Square- Normally played with hands and a large ball that bounces, the rules are very similar but you play with a hacky sack and your feet. If you let the Hacky sack land in your square you are out and someone new comes in.
Hacky sack is a sociable game and can be thought of as a minor sport, no doubt that this game will eventually make it to the olypics as many irregular sports/games have. I dont know if there will be many competitors though because many hackyers are stoners, and you are not allowed drugs during the olympics.