You have got me thinking about what I did when I was younger now. You know at the age of 7 I had a car battery in my bedroom to experiment with. I remember it said "sealed for life" on it so I asked my dad if that ment it would not leak acid, so he turned it upside down and it did! lol I remember this well as I used them to provide light in the oct 1987 hurricane!, and at the age of 6 I accidently connected a row of 12v bulbs i wired into the mains instead of a lego transformer I had and they all exploded, and blew across the room! The burn mark from that remain on the plug socket in my room untill the day I moved house.. At the age of 5 i was brought a soldering iron hahaha! So much more I could say hahahaha.