Wow very comprehensive & well done. If mechanical watches tickle your fancy, there is a ton of watch repair video on YT. I particularly enjoy wristwatch revival ( https://www.youtube.com/channel/UCD80T1s2Za4K682CQDGwEKQ ). A warning though, if you consider to get into that hobby. I tried, it's really hard, expensive (I spend close to €1k and that is with b-quality stuff. Good stuff is 5-10x more expensive.) and can b…
Here's a tip on buying watches to repair or restore - avoid the big brands at first. Many watches use the same or similar movements (ETA is a big one, but you'll find Seiko movements hiding in watches from the 60s and 70s, too).
eBay is your friend (don't fall for too-good-to-be-true items from India or Pakistan)
Hang out on watchrepairtalk.com and/or watchcrunch.com and ask lots of questions. It's a very friendly community.