Who didn’t play with the mercury that came out of broken (accidentally or on purpose) thermometers.
Mercury!!! Holy rolly moly. I went through at least 2 thermometers a month. That stuff was fascinating. I don’t remember exactly what age or for how long but I’ll never forget rolling that stuff around in my hand and then wrapping it all up and hiding the evidence. Science and danger all in one!
Of course, I did acquire a pituitary tumor in my twenties but I’m sure that had nothing to do with it. :)