Lookin' for easy to build train papercrafts? Your search ends here. You can download 16 different train models including the famous Shinkansen of Japan.
Train Paper Models

Build realistic papercraft camera models of the Minolta X-700 & MD Zoom 3.5, Ricoh R1s and Fujifilm Ace. You can also download a detailed train and a yummy looking beef bowl Yoshinoya. I'll also put up the link to Dirkon pinhole camera.
Camera Paper Models
Dirkon Pinhole Camera Model

Here's a really awesome papercraft from Jonny Chiba. There are currently two designs and a third one is comin' up soon. You can also download a viking and a simple train with graffiti.
Chiba Paper Models

"...Not very long ago, in the top left-hand corner of Wales, there was a railway. It wasn't a very long railway or a very important railway, but it was called The Merioneth and Llantisilly Rail Traction Company Limited, and it was all there was.And in a shed, in a siding at the end of the railway, lives the Locomotive of the Merioneth and Llantisilly Rail Traction Company Limited, which was a long name for a little engine so his friends just called him Ivor..."

So began, in 1959, the first episode of the first series of a set of television films which were to become part of the mainstream of Children's television for the next thirty years.

The model is very simple and everyone can build it. Just click and save the two sheets of parts and you're ready to roll.
Ivor the Engine

Here's a very nice train model from the movie "Back to the Future." The model is a bit complicated and you have to print 7 pages of parts and another one on a transparent sheet.

Paperinside

Here's a very nice building of the Mausoleum of King Theodoric. The model is fairly simple with only one page of parts. You can also download F1 cars, a locomotive engine and the bust of the writer Jules Verne.
Papermodel