I have bought maybe ten usb-to-3.5mm adapters in recent years. I keep giving them away. Last time I went on a work trip (military) I gave away two sets of cheap wired headphones+adapters to kids whose bluetooth headsets had stopped working during long plane/bus rides. (19yo = kid)
I'm not kidding when I say I recently saw someone on a plane using a wireless charging station. They had wrapped tape around the phone to hold it on the charger. Progress!
I've been using the same $9 Apple one for 3+ years at this point. There have been times when I've pulled it out of my bag and saved the day. Young people are amazed that it just works (microphone and all), Mac or Windows, computer or tablet. Ain't progress wonderful?
I'm not kidding when I say I recently saw someone on a plane using a wireless charging station. They had wrapped tape around the phone to hold it on the charger. Progress!