I too have an assorted collection. But even more fun, had two large jugs and several small jugs of mercury. I would guess maybe 150 pounds or more worth. My grandfather was a dentist and that is what he used to make fillings put of. I can't imagine disposing of that now. I think we gave it to another family friend who used to have his own dental lab. It is a shame because it is a few hundred dollars per pound now I guess.
My wife wants me to write another book. Not about fish but memoirs of Viet Nam. I was thinking, of making a novel "based" on real events but sort of like in my fish book if that is even possible. I would stretch the truth a lot to make it more interesting although the truth may be interesting enough. I will see if I want to do it.