OK here's my 2 cents worth.
Back many years ago when I first started as a technician at a defense contractor I was on evening shift (3:30 to 12:00). A couple nights after starting there I was offered a tour of the machine shop area. After being led through the lathes, milling machines and other work stations, we went to the iriditing and painting area. The sandblasting box was pointed out to me and I was encouraged to look into it through the glass plate in the top. As I bent over to look, suddenly arms were thrust out of the box through the rubber gloves that were attached and grabbed me. Liked to scare the crap out of me!!!
From that day on, I delighted in being onhand for the next new guy being generously offered the same tour. It was always the highlight, and it always worked!