Designs by rbuckbailey include 3.75" Fallout armor figures, 3D Catan and Carcassonne game tiles, and more. His FO3 Power armor was created by exporting the Fallout 3 game models and patching them to be watertight and solid - much like I did to mine before printing and full resculpting.
However, he's designed 3D printed inset snap-joints to create a free GI JOE sized toy kit: a great idea. I think it would also be possible to print these at any scale, and simply inset factory-made plastic joints.
However, the real surprise I got today from my Chris over at Combustible Props - There's a fellow who goes by lilykill on Thingverse who is releasing high quality Prop-scaled Fallout pieces for download and 3D printing: