I hadn't realized that airplane smoking was banned in the US as late as it was - even when the airports my parents lived closest to were LAX and LaGuardia, respectively, I'm pretty sure it had to be a segment that's always at least six hours, not one that can get as low as 5.25.
Anyway my very first flight as an unaccompanied minor was just before they banned it on flights longer than two hours and shorter than six, so smoking was probably legal on that flight at least. It didn't really register because smoking was legal everywhere all the time.
Non-standard headphone jacks too, and if you were lucky, they passed out single-use headphones for free. Otherwise, it cost $2 to rent headphones that fit the jacks for the flight.
Oh, man. When I was in college, I'd fly home to my parents with my grandma, who smoked. Had to sit in the back of the plane, and the air was just blue with smoke. Miss my grandma, don't miss those flights.