I got a portable monitor heavily discounted because the HDMI port was broken, but I only wanted to use it over USB C so I was OK with it.
I’m quite happy with it, I don’t use it everyday, but whenever I need to travel for work it does come handy, for example, when working from an hotel room.
I’ve also used it with my Switch from time to time, works great too
the doorbell is inside my house, the spring and pulleys too, he only bit exposed to the outside is a lever you pull to make the contraption move, it is kinda like the launcher on a pinball machine