The WiFi-enabled tea kettle...
Evidence that Victorian-era commentators may have been 130 years ahead of their time, when they claimed that mankind had invented everything it needed, now that there was electric light and the telephone.
More seriously, if you need a quick cup of tea when you get home, you can get a hot water dispenser. Or if you want to go 20th century, you can walk in the front door, put down your keys, go to the cabinet and grab a large glass measuring cup, fill that with water and put it in the microwave oven on "high" for 2 minutes. I'm pretty sure the boiling water doesn't taste any different.
Biting the hand that feeds IT
