nfsm
Come to Spain, we have everything
https://wiki.archlinux.org/title/Uniform_look_for_Qt_and_GTK_applications
Have a look here, it might help. I can’t help much, I have KDE and Hyprland but I setup theming in KDE and it also sets in Hyprland.
I know there’s an answer but there are also inexpensive IP KVMs if you wanna go that route.
I’ve seen this recently - https://youtu.be/5ZQra087xOU?si=uJUaC1wv26z2Z7oB
Haven’t looked up a lot on this subject but have a look at https://pikvm.org/
Level1techs tends to go more into the enterprise server side but Wendell always has some gadget to show off.
I’d also advise to keep an out on the maker space, like raspberryPi or other SBCs, there are inexpensive machines and plenty of guides for various applications which don’t require much Linux knowledge if you’re already doing server stuff.