Basics
At prep school, we persuaded our fathers to smoke cigars, because the flat cedar boxes could be converted to handhelds - containing key, switch, buzzer, bulb (and a few rare stamps). By public school, transistors had been invented (OC72?) and a 2-transistor radio could rebroadcast 'Lux' (by coilwire aligned down the floorboard cracks of the dormitory) to any of the 40 beds who could afford my bootleg headphone-hire. No pay? We streamed the Third Programme instead. That's education.