The caller-id said “Bank of America” and the guy with a south asian accent was asking me something about my medicare card. I don’t use BoA and saw no need to reveal sensitive info to anyone who cold-calls me. Buddy the Elf probably could have wasted more of his time.
Years ago, was vacationing on a sleeper train, when the engine had a failure. So no power for the diner car, the porter brought us subs while we waited to move again.
LED lights designed to run on 3 AA batteries may be modified to have a USB connector for the power of them, rather then constantly replacing the batteries. Also the +5 volts of the USB is very safe to touch and handle.
A lot is singular.