Kid mused about the possibility of a youtube channel that only showed coffee. So I told him about the original webcam that monitored a break room coffee pot for years. And of course from there we ended up on the joke RFC for Hypertext Coffee Pot Control Protocol, which also introduced the error code 418 I’m a teapot (whose response body MAY be short and stout).
https://en.wikipedia.org/wiki/Trojan_Room_coffee_pot