Balance balls can be a great tool for playing with your baby. Have your baby lay on top of the ball on his back so he can see you. Roll the ball gently and be sure you are smiling and showing him what a great time this is.
Eventually place your baby face down on the top of the balance ball and roll the ball gently back and forth. Once your baby is able to sit you can place him in a sitting position on top of the balance ball while you bounce it or roll it back and forth.
It is fun to put this activity together with a song such as Rock-a-Bye Baby or Row Row Row Your Boat – and roll the ball to the beat of the song.