I used to work at a Lego retail store, and one task I did a lot was assemble wheels. Lego stores have cups that you can buy and fill with a variety of loose pieces, and one mainstay was wheels, which come with a plastic part that connects to your other pieces and a rubber tire that goes around it. we didn't want to just sell these separately, though, because for the vast majority of use cases, you wanted both components. however, these pieces came shipped to us in two separate boxes, so we had to do the work of putting them together.
this was a pretty good task to do while watching over the store on a slow day, because we had aprons with pockets that were the perfect size for fitting three of the cups you buy the pieces in, so I'd have one cup each of the two components and a third cup to put the assembled ones in. however, if you put together a lot of wheels, it turns out that actually gets quite painful after you've done a few hundred. I had no good way of keeping track of exactly how much I'd done, but it was definitely somewhere in the thousands, and I'm probably one of the world's top Lego wheel assemblers.
anyway, one set that I bought when I was finishing up my time working there was the Space Shuttle Discovery set, and I never got around to doing that, and I'm finally doing it now, and in bag four of that set you assemble some wheels, and I just got hit with some incredibly powerful sense memory.
anyway, here's a fun piece of trivia that I learned at that job that I'm sure you'll find useful: by quantity, Lego is the largest manufacturer of tires in the world.