If it could be done, and done right, I'd love to see a couple wiki-like additions to the fediverse, one focused on products and product-specific information and care, with the other focused on the development of a catalogue of methodologies and tech for production and more general repair. Not tech news like the technology instances I'm aware of.
But I guess it's not suited for the format, nor could we really hope for the task of building anything even close to exhaustive to be a surmountable one for us.
I had some ideas about UI/UX for something like this a while ago, though it wouldn't work with Lemmy. I could probably find my notes and sketches, but effectively they're just a bunch of wishful thinking born from my dissatisfaction with the limitations of Wikipedia, the chaos of Google, Youtube, and Reddit, and the ridiculousness that is WikiHow.
It's been a few years tbat I've been crossing my fingers for a positive paradigm shift specifically for the online content about products and DIY.