Hacky sacks, also known as footbags, are small balls under filled with sand. This makes them quite squishy so they are easy to stall on your foot or head. You do see hacky sacks on juggling and circus stages but they are popular outside of the circus world as well. Footbag is a fun game enjoyed by people of all ages. It's been particularly popular with surfers as it can help to develop a good sense of balance. The beach is also a great place to play as you can dive around with less fear of hurting yourself.
The game of hacky sack involves one or more people trying to keep the footbag from touching the floor. The only rules are you're not allowed to use your hands and no apologising. There are loads of cool tricks and skills you can incorporate into the game such as foot and head stalls. Hack sack is an awesome park or beach game suitable for all ages. As footbags cost very little it's also an inexpensive we to have a whole lot of fun.