The BBC recently published this great article about the microphones used back in the day. Apparently, despite the age, they still basically work.
That's pretty extraordinary. So much of our electronics and other technical gear is made for one-use or only brief use. And that's too bad, because then we're more inclined to throw things out when they're constantly breaking down. We need to get back to making things that last and reusing the old things that still work. Our planet needs it.