On Deviant Art, Madun Two Swords offers a selection of paper models of a medieval town.
There are just too many good 2.5D fantasy miniatures on Eddnic's site to begin to list them. Visit and take a look.
Greywolf offers a large selection of paper models of post-apocalypse style cars scaled for 15mm/20mm as well as a few designed for 25mm / 28mm. Scaling the figures with a printer should not be a problem, though.