Aliexpress has tons of watch parts and there's a DIY watchmakers community as their consumer. I am currently browsing around but most of the cases are 40mm. I can't stand a "wall clock on the wrist trend", the trend has been going on forever. I am a practical person so I would not need more than 1 automatic watch.
Imagine if we can just buy assemblies for our DIY Leica M3 or Canon FTb. That will be cool.
I only recently became aware of the market for watch parts at Aliexpress. I got my parts from boutique providers when I was building mine. Actually, one of my watches started out as a Seiko 5 field watch, but I didn't care for the dial or strap. Next thing I knew, I had replaced everything but the movement and case. Then, I decided I *must* have a hand-winding and hacking movement, so here came the NH34 movement.
I generally prefer smaller watches because my wrists aren't large and anything above 40mm tends to wear too large on my wrists. But, as I get older, I appreciate the larger dial for visibility's sake (though, a larger watch doesn't always mean a larger dial). My main daily driver is one I built and fairly small, but with an uncluttered dial sporting large numerals at 12, 3, 6, and 9, so it's pretty legible. My other DD is a factory Citizen Eco-Drive field watch that I haven't yet been compelled to "mod"...yet.
I don't need more than one watch, but I have 3. I don't need more than one camera, but I have 5. GAS is a thing for many hobbies.
I think a DIY Leica or Canon or Nikon would be awesome. I'd probably be down for that. Hell, with all the parts cameras out there you could probably do that already.
Chris