Toolmaking and Pantorouters
Stumbled on this guy who makes really elaborate jigs and uses shop tools in a high-precision-meets-resourceful-boy-scout fashion. None of it is digital fabrication, but I think its informative to know how people make do without CNC routers by rethinking everyday hobbyshop tools.
He made a pantorouter, which is a pantograph that moves a router bit instead of a pen/pencil. He designed it with the purpose of cutting gears in wood, but realized it also makes fantastic mortise/tenons and integral dowels.