Kubuntu! Kubuntu 12.04 was my first distro, so it always makes me happy to see :D
Also, you seem to have a lot of cables on your desk, and I can't figure out what they'd all be for :P
Power, usb, displayport, audio, some are for the led strip on the back of the monitor, which was controlled by a chinese arduino nano clone until it stopped working for some reason, theres a bunch of periphery and a raspberry pi with its hdd and power supply, etc.
Nice! It seems like the cables are justified. I also ended up on default 12.04 with unity after a half year or so because kde at the time had too many quirky for me. I've honestly been wanting to give it another go since plasma 5 came out, but haven't gotten around to it.
I didn't even know interactive wallpapers were a thing, that sounds so cool! I'm the kind of boring person who keeps almost every default unless it bothers me, even the wallpaper 😅