When I started doing amateur radio, an older guy gave me a Morse code key (a device to tap out Morse code signals) that he made in the late-1960's from electronics shop components. He said he made several dozen because the materials were cheap, and he gave them away from time to time until the early-2020's. It works extremely well and is very robust. I have accidentally dropped it or knocked it off my desk a few times, and nothing happened.