I'll start with mine. yes part of this was to brag about my somewhat but not too unusual setup. But I also wanna learn from your setups!
Anyways: I primarily use Gentoo Linux.
I have two headless servers: a Raspberry Pi 4B and a Oracle cloud VM (free tier). Both running OpenRC, and both were running mainline kernel with custom config (I recently switched the Pi to PiFoundation kernel due to some issues). The raspberry pi boots from SSD and has no sd card inserted.
Both servers were running musl libc instead of glibc for a while. This gave me a couple of random issues, but eventually I got tired and switched back to glibc.
I have a desktop running gentoo and a laptop running arch, but hoping to switch the laptop to gentoo soon.
Both are daily driving wayland (the desktop had nvidia card and used for gaming). The desktop is running a kernel with a minimal config that compiles in 2-3 minutes.
What's your unusual setup like?
I PXE boot my desktop.
Well that is unusual these days. You PXE boot the entire OS and mount some type of network share or you use it more in a terminal sense to logon to a more powerful machine?
It's a bit of a weird setup, and not at all practical. I build "golden images" with archiso, the image gets sent over, then local disks are auto-mounted. The local disks have my ~/home, so all my configs, flatpaks, games, etc. stay consistent.
I use PXE for my servers, so I figured "why not?". I don't do too much on it besides videogames, I do most real stuff on laptops. This "setup" probably isn't going to stay around forever.