The deadliest toys ever made include "what were they thinking?" oddities like a children's laboratory kit that included uranium; but other, more seemingly innocuous recreational offerings, make the list—including the Slip 'N Slide and trampolines. You'll learn why you should always heed the age limits printed on toy packaging, wonder why lawn darts ever seemed like a good idea, and hear about an awful incident in Victorian England that may have helped inspire future safety reforms.