Agree on the parent part. If I let my kids do anything remotely close to what I did as a kid, CPS would never let me see them again. I left in the morning and came back at dark, with no check in. I did experiments with things I learned in the Anarchists cookbook. Its amazing what you can blow up with household objects. You kids today have it easy blowing up stuff - just go on Youtube. In the early 80s you had to know someone to get the really bad somewhat illegible copy. My kids love watching Mythbusters when they blow things up. I wasn't sure whether to be happy or worried when my 8 year old asked for Polycarbonate blast shields. He was thinking of things he wanted to blow up, and how to do it. That made me worry. He wanted to do it safely and had given some thought to shield and remote triggering. That made me happy, i did not have the same focus on safety as a kid and burned my eyebrows off several times. As of today we have not done anything, he has got his attention on other projects and I am not going to bring it up.
TL:DR - typical 12 year old kid from 1982 would be labeled child Al Quaeda terror cell, parents would go to jail for 25 years.