You thought that the new ease of getting cheap prototype PCBs made from companies like Seeed was revolutionary, how about a cheap machine that can allow you to print it at home? Looks like Voltera could help speed up prototyping (at least for SMD boards).
“Circuit Board Printer
Print dual layer PCBs on FR4 with 10mil space/trace. Our 20mΩ/sq sheet resistance and conventional soldering makes prototyping a breeze
 Solder Paste Dispenser
Forget stencils. Pop your board in and dispense solder paste onto printed OR traditionally fabbed boards
 Reflow Capabilities
With a 550W heater watch your components reflow and skip the hassle of hand soldering altogether.”