I've had a few enquiries for these over the past year or so, and have finally managed to scrape together enough time to get them designed, tested and moved to production: Including one of my unique flexible designs.
28mm round movement trays. From looking, it doesn't actually seem like anyone else makes these at all, which is frankly odd. Available now from my eBay shop (if you're in the
EU this is your only option, sorry) and my webshop at
https://shop.winterdyne.co.uk/
Anyway, obligatory pics.