Maybe a bit plain since I'm only at mediocre level in my Linux journey, but I use my favorite fonts for Kitty. Recursive Mono Linear and then for italics and comments in neovim I use Recursive Mono Casual Italic.
Recursive Linear is so tidy and neat, with just the lightest touch of personality. And Casual keeps that style but tweaks it just ever so slightly to a more comic. And they have sans versions of both as well for everything else.
I also made my own Starship prompt to match my desktop. It runs an easily reconfigurable color palette and uses color coded chevrons to denote different git statuses.
I thought hard on this (I just like naming things). I came up with gemming. Graphical Environment Management. Unixgems.
It sorta works because customizing your environment is sort of like putting the finishing gems on it.