The top ten most dangerous toys of all time. My favorite was the Gilbert Atomic Energy Lab:

…a radioactive learning set we can only assume was fun for the whole math club. Gilbert, who Americanmemorabilia claims was "often compared to Walt Disney for his creative genius," had a dream that nuclear power could capture the imaginations of children everywhere. For a mere $49.50, the kit came complete with three "very low-level" radioactive sources, a Geiger-Mueller radiation counter, a Wilson Cloud Chamber (to see paths of alpha particles), a Spinthariscope (to see "live" radioactive disintegration), four samples of Uranium-bearing ores, and an Electroscope to measure radioactivity.

The toy was only sold for one year. It's unclear what effects the Uranium-bearing ores might have had on those few lucky children who received the set, but exposure to the same isotope—U-238—has been linked to Gulf War syndrome, cancer, leukemia, and lymphoma, among other serious ailments. Even more uncertain is the longterm impact of being raised by the kind of nerds who would give their kid an Atomic Energy Lab.

It’s all fun and games until little Johnny's pee glows in the dark!