The Rattle:
The rattle acts as a noise making device which then re invents itself as the key for the wind up toy and the clock mechanism at the end.
The rattle also has facial expressions to help access the childs imagination once the child develops the ability to understand facial expressions at the age of 1.5 years.
The Block and the Umbrella:
The Block acts as a stress buster. the child can pull and feel different textures at the age of 1 and later on can use the balls to make noise and pull and fire sounds as well.
The Umbrella acts as a top and later acts as a propeller for the clock.