I've done all kinds of random jobs but like to tell anyone who will listen that my time as a cleaner was possibly the best of them all.
I worked in a building that was entirely dedicated to operating and adminning a traffic tunnel, so there were normal office rooms but also cool control rooms full of flashing lights and interesting displays and friendly people who were only too happy to infodump about it all.
The top floor was entirely given over to a conference room featuring a massive scale model of our tunnel but also the surrounding road system, complete with tiny toy cars. That room also had a hot drinks machine that was entirely free to employees so most of my breaks were spent up there with a book drinking hot chocolate.
Yeah, cleaning toilets and buffing floors is not exactly going to keep your mind occupied, but that just means it's free to wander to more interesting places. No stress, nothing to take home at the end of the day.
If you can get by on the generally lower pay and get to clean somewhere interesting there are a lot of unexpected perks, tbh.