The Clatter Musical Toy from Plan Toys makes a click-clack sound that changes with play. Produces sound from a gentle ripple to a clattering crescendo. Using an up and down movement with both hands, the Clatter's segments clap against each other to create a clattery sound. Try different speeds and your movements will soon turn into rhythm. A musical instrument toy such as the Clatter provides an ideal introduction to rhythm and music-making and is suitable for group and individual play. Musical toys help to enhance a toddler's sensory perception, auditory skills, bilateral coordination and cognitive development.