Jeez, I’m glad I grew up in the early 70s. I had chemistry sets with Mercury and uranium, creepy crawlers sets (made my own fishing lures with them) and lead melting set... Made fishing weights. Am I still alive?
My brother and I had a race track for liquid mercury. You put 2 beads of mercury at the top and pulled the gate to see who’s bead of mercury went the fastest. Again, 1970s. You’d be sued into oblivion trying to sell that to kids now.