Equipment - playground or nerf ball, 4 tumbling mats, home plate

Age level - 3-6

1. Set up 4 bases in a square formation as far apart as you like.
2. After the ball is kicked, the kicker runs to first base. If the kicker
    is "safe," s/he doesn't have to run to the next base until s/he
   wants to or thinks it's safe to run. Runners must circle the
    4 bases twice to score. Runners must run if they take both feet off the
    base.
3. There can be unlimited number of runners on a base. Runners
    can run any time - no matter who has the ball.
4. Runner is out if hit below the shoulders or a fly is caught.
5.  3 outs and change sides.
6.  Use mats as your bases