Ravensblight Manor is a free paper model of a haunted house. I took a look at it, and think that it would be just about the right size for 25mm – 28mm figures.
Paper Models
Mines of Moria Paper Model
Here’s a nice set of paper model walls, columns, corners and stairs for constructing your own Mines of Moria.
25mm Scale Paper Books
It’s the strangest thing: 25mm – 28mm scale paper models of …. books. No. Really.
Derelict Commercial Building Paper Model
Stoelzel’s Models offers a free paper model of a derelict commercial building.
Starfighter Paper Models
Genet Models offers two free paper models for starfighters and a model of an orbital missile gunboat.