Clackers
（重定向自Klackers）
Clackers (also known as Clankers, Ker-Bangers, and numerous other names) were toys popular in the late 1960s and early 1970s. They consisted of two plastic spheres suspended on string which, when swung up and down, banged against each other, making a clacking sound. Clackers are similar in appearance to bolas, the Argentinian weapon.