I have an Amazon Echo at home, and one at the office. Both are set to allow “drop in” calls: I can just say “Alexa, drop in on the Reinventorium” and I get a live microphone into the office, no questions asked.

Tonight I had to get home for supper before my 3D printer was finished printing. I plan to go back to the office when it’s done to shut things down. But how will I know when it’s done?

Turns out that I can hear the printer printing through my Echo-to-Echo connection. So I’ll simply “drop in” from time to time and head over when I can’t hear the printer any more.