Might not be on topic but you got me started.

Back when phone makers included 3.5mm headphone jacks, it was a reasonable expectation for people to carry them along. I even nicked a dozen pairs of JAL dom Y headphones during my JGC修行 to hand out on HK buses.

Nowadays with the "brave" (greedy) abolition of headphone jacks by phone makers, all I can do is put carry around my noise cancelling set and put them on.