Our kids go in waves with their favorite activities.  For quite a while, everyone was into waveboarding.  Sometimes it's playing marbles and sometimes it's rubber bands.  The current craze is a game called "Juggling".  The kids take turns kicking a ball in the air. The first person has to kick the ball once, the second person kicks it twice, and so on.  They have up to 3 tries to get the desired number of kicks in.  Sometimes they also have contests to see who can get the most number of kicks in one try.  I haven't asked everyone, but the highest number I've heard is from Maricris.  She kept the ball in the air for 60 kicks in a row!  Amazing!