I used to color my prompt depending on which server I was connected to (ssh), and a different color scheme for prod, dev and local. But that was a long time ago and the script is buried somewhere, also I don’t stay ssh’d to nearly as many places as I did back then. But I did like it, I’d use it now if I had it.
Bcachefs, love COW files. I wish all file systems had it even if it naively copied the whole file on first write. Sort of a write safe hard link.