The Lets Move baby box set was developed to encourage fine & gross motor skills. Suction cup the rainbow reel to any smooth surface, and baby can bat at the wheel, a developmentally appropriate skill at this age. The spinning wheel reveals a rainbow of mesmerizing colors. The bird mini-shaker is the perfect size for baby to hand grasp and shake. The busy ball is squishy and easy to grasp to encourage reaching, grasping, and transferring from one hand to the other. Watch the beads go back and forth, and clack together, on the rails as you move the ball!