Somehow I’ve wound up with a collection of headsets from my various trips. Some of them are so old they probably aren’t even compatible with any of the airline systems anymore. So why have I hung on to them? I guess I thought I might need a set one day. Or that I could avoid purchasing a set on my next trip. Found a little microphone among them, I think from an old Sony tape recorder that I long ago recycled. Time for another trip to electronics recycling. Unless you can think of another use for these headsets?