Ranchoth's Arsenal is a Shapeways store run by a guy called Nicholas Gaston, which sells 3D printed models of a variety of model accessory parts with a distinctly What-If flavour. He makes the EXINT pod models which myself and a few other people on here have bought, and he makes a wide variety of tac nukes and oddball weapons, both real, projected, and alleged. Well worth a look:
https://www.shapeways.com/shops/ranchoth?li=pb&page%5Bnumber%5D=1&page%5Blimit%5D=48&page%5Border%5D=ascIf something in the listings looks stupidly expensive, click on it anyway and check the scale options: some of the listing default to large scales and the 1/72nd versions are more reasonable.
His latest addition is this gorgeous thing in 1/35th (other scales to follow):
Bell Aerospace Jet Flying Belt