I thought this might be good for the doomsday machine interior and the nacelles. free spinning, by blowing on it, or even axles or ring gears. copied in paper and reduced in size , of course.
That is cool, and offers a non electronic way to make incredible special effects. A small fan inside the Nacelle, sucking air, with some slots could suck air in and turn those and make an incredible looking Bussard collector. Very smart!!