The 10 Most Dangerous Toys of All Time
I agree that it is important for kids to have experiences they can learn from. I well remember using the 'thing-maker' toy as a kid (basically just an exposed heating element used for cooking plastic), and sure I burnt my fingers numerous times. Taught me to be careful around hot things.
I was in Japan a number of years ago as a tourist, and came across a morning TV show aimed at kids. The show was teaching kids how to use knives in the kitchen. A little girl was giving instructions on how to hold it, how to cut, etc... It was probably aimed at the 5 to 10 age range. Instead of sheltering their kids from everything, the Japanese were teaching their kids important things they'll need in life.