I think this extends to wealthy communities too. Basically every item in my home more complex than a spoon is beyond my capacity to manufacture or repair. A resource that teaches me how to build useful things without relying on a complex supply chain or prohibitively expensive tools would be pretty darn liberating.
Well, fundamentally, there are two different types of furniture:
- platforms
- boxes
so if one can build a drawer box, one should be able to make pretty much anything --- it's just a matter of working out how to cut things to length/width and possibly reduce/adjust thickness and what sort of joinery one wishes to use.
See my top-level post elsethread for the metal-working angle.
You know you already have that resource, right? That's what the internet is. There's nothing stopping you from learning, for example, woodworking today. You just have to start.