The Haunted Dimensions site has paper models of three small crypts. The only downside of these is that the back of the crypts are defaced with site advertising. Still, there’s also a brick wall there that you can paste the crypts up against.
Paper Models
Paper Model “L” Tracks
In N scale here are some free paper models of the tracks of Chicago’s famous “L”.
Modern – Futuristic Cargo Container Paper Models
Marcos at Topsolitario offers a set of free paper models of cargo containers for your modern and futuristic miniatures games. They are quite lovely. There’s even a video showing how to build them.
Paper Toy Construction Set
The Paper Toy Construction Set is a collection of jpg images of struts and girders in a variety of sizes, shapes and angles. The idea is that you print out these pieces and then use them to build your own models — much like an erector set.
Paper Testudo Model
For Warhammer Ancient Battles, here is a paper model of a Roman testudo in 25mm/28mm scale.