#“Was anyone else a member of Fireball’s Club from the 1970s Bullet comic?”
It was huge in our school. I even had the special plastic medallion/key. For some reason I managed to block out his ‘tache in my memory. Here are two pics from Google Images which match my own experience.
Secret codes and invisible ink were major parts of my youth. I wonder if we could use something similar to get kids interested in privacy and crypto ;-)