>>212495427 (OP)I used to work at a place that built computers, and I worked on the packaging line.
One of the things we would have to do is make all of those cardboard inserts that they used to put your manuals and disks in that we called pizza-boxes.
You always had to keep them ready and fed to the guys down the packaging line.
But it was flat pack cardboard, and you had to pop it out, lock the tabs into place, and then punch out the little holes and fold the lid down.
It was pretty monotonous repetitive work, but when I did it I would just completely zone out and start making them on muscle memory, I remember getting it down to where I knocked the thing on 2 side, tossed it in the air, punched out the bits, and then folded it down in as few movements as possible.
And I would just reach this zen like flow state where I'm pondering important existential and philosophical concepts and astral projecting into deep space, and then suddenly I'd blown through a whole pallet of the things in like 20 minutes.
Not exactly a job I'd want to go back to as an adult, but sometimes that kind of repetitive movement like that is meditative.