Unfortunately the CardFAQ website seems to have disappeared - so here is a copy of the links page, which will help you find all sorts of interesting paper and card models to make (most of the dead links have been removed).

CardFAQ - Links to free card models

• KittyHawk Software has free models available at their Paper Paradise site. 
• Iceberg has several small models available for downloading.
• Looks Like... Paper Models has a free sample.
• Fiddler's Green has free samples of their models.
• Rob Ives' Cardboard Engineering page has some automata, in the `Hands on' section.
• Digital Navy has a 1:250 scale models of the German WWI torpedo boat V-108, an Admirable class minesweeper-subchaser, and sample turret (with catapult and floatplane) from their USS Arizona kit.
• L'Instant Durable has a sample model of the Campanile di San Marco in Venice.
• Moshe Lemer has several models, including a ModelArt Spitfire.
• Hairston Aviation have free samples of their Cessna 172 and Pitts Special.
• Georg Eggers has an air-powered model rocket with pneumatic launch pad. He also has a zoetrope.
• Phillip Fickling Dimensional Design have a submarine.
• Papermodelworld.com has Cee the Bee.
• De Cartonnagefabriek have a free sample (in Dutch and English.)
• Delta 7 Studios have a Mercury Redstone 8.
• Paper Shipwright have a 1:250 scale model of HMVS Cerberus.
• Paper Creations has a simple F-15.
• Cuspa Paper Models have a Celtic monastery.
• Robert Conroy has a model of a geodesic dome, also pictures of some models.
• Beppi's Paper Model Page has two models available to download.
• Lou Coatney has a sample Butler class destroyer escort.
• Thomas Pleiner's own WWW pages are not presently available, but he has made his Cessna 172 "Skyhawk" and a railway station model available through Saul Jacobs' Paper/Card Model Page.
• Stephen's Paper Bus Manufacturing Plant has dozens of models of city buses. The models are very simple, but the variety is impressive.
• Micromodels - So Called, two models. Not the same as the well known Micromodels® line of architectural models. This is a fairly blatant abuse of the Micromodels® trademark, and the models themselves are fairly crude, not up to the Micromodels® standard at all, but they are free.
• Ulrich Prahn's Star Trek Cardboard Models features four models, the shuttlepod El-Baz, the shuttlecraft Magellan, a Romulan scout vessel, and the SS Botany Bay.
• Rich Harman has a model of an Midwest Extra 300S aerobatic airplane. Nice illustrated assembly instructions, too.
• The Key to Time, a paper model of the artifact of the same name from the Dr. Who television programme. Here's a Dalek.
• The Tardis Databanks have a tab-and-slot model of Dr. Who's Tardis.
• Grace Sylvan has a simple house and store. 
• Brumbaer has 10mm scale buildings for the miniatures wargame Warmaster.
• Phil Heiple has a dozen simple dinosaurs on his Download-a-Dinosaur page. Also Download-a-Revolutionary and Download-a-Dragon.
• Ben Zuidwijk has a Business card which makes up into a simple little airplane.
• Dick Gerbrands has a model of a dachshund.
• Denis Moynihan has a sort of `autobiography', documenting various cars he's owned or encountered as simple paper models.
• Takahiro Kojima's Paper Model World has several models including automobiles, buildings, and spacecraft. 
• Denis Obriot's Amiga Maquette page has trains, boats and some other models. Some can be downloaded directly (look for the telephone icon); others are available by mail or e-mail.
• Ralph Currell has 1:32 models of the V-1 Flying Bomb and V-2 Rocket, and other models.
• David Jackson has five biplanes and some buildings in HO (1:87) and N (1:160) scale.
• Pierre Gauriat has a fortified medieval church, a castle, a Dewoitine D510 fighter, several automobiles, and an Ariane 4 rocket.
• Yasunori Nagaoka's Pokara Paper Craft has 12 simple models of a Honda CR-V. You can download them individually or in a bundle with instructions. There's also an instructions page on the web, with pictures that are easy to follow.
• Hans-Jürgen Geibel has a few models of his own design. He also has many models which are not original, but are free downloads available from other sites. Unfortunately, the original sources for the models are not credited. This is not only a disservice to the original creators, but makes it hard to figure which are original and not duplicates. The listing of the site here should not be taken to imply that the FAQ editor approves of this practice.
• TomTom's Aviation and Scale Model Resources has a 1/144 scale aircraft hanger.
• Nobuo Koizumi's Karat Creek Model Design has a couple of models of narrow gauge railroad cars.
• Phil Koopman, Jr., has a web page featuring the Fly 'N' Things models developed by the late Phil Koopman, Sr.
• The Star Wars site theforce.net has a Naboo fighter, apparently scanned from the Czech magazine ABC.
• Zio Prudenzio has several aircraft.
• Formosa Paper Models has a model of 'Honmaochen', a sort of Taiwanese castle.
• Yasu Tanaka has models of F-1 racers and some other automobiles. In English and Japanese.
• Lucia Dunbar has a simple model of a house in Tuscany.
• Luigi Saso has a Greek tavern and several other models. (Alternate server.)
• Jun's Paper Craft Page has a rabbit. In English and Japanese Jun Mitani also has Tenkai, shareware software for developing paper models, and 3D Card Maker, for generating pop-up greeting cards. Sample greeting cards are available.
• Shashank H. Mardikar has a Fokker Eindecker E.III.
• David Hathaway has models of famous chairs, among other things.
• Re-Re has Citroens and airplanes (en Francais et Anglais.)
• Volker Preikschat has race car models.
• Jim's Dollhouse Pages have a variety of dollhouse furniture and decorations.
• Ray Morris has two model locomotives in the Micromodels tradition.
• Raymond van Campenhout's Brussels Paper Trams has models of the trams of Brussels.
• Zoffbred's Volvo page has a Volvo V70 T5, Volvo V70 (2000), and a Volvo V40.
• This site has a caravel and a pirate ship, and several other subjects.
• The Machida City Museum of Graphic Arts has a Model of Anne Frank's house, by Ai Shimizu.
• The Cleveland Museum of Art has a Paper Model of a Pharaoh Death Mask.
• Michael Serdarusic has a model of Der Mannheimer Wasserturm.
• The Minnesota Museum of the Mississippi has a model of their building, on the About the Museum page.
• The Duyfken 1606 Replica Foundation have a small model of the Duyfken, the first European ship to visit Australia.
• KDF-Wagen have a Type 2 VW bus and a Type 2 VW pickup.
• Sequoia Aircraft Corporation have models of their F.8L Falco.
• The Böda school (on the island of Öland, Sweden) has a school bus model. Follow the link labeled Aktuellt. This model was designed by Gregorz Rutka, who also did the Trolleys of Gdynia. 
• The Back Yard Yacht Builders Association have three sailboats in 1:32 scale.
• Shin Caterpillar Mitsubishi have a model of their Rega 320C power shovel.
• From NASA: 
  • Pioneer 10 paper model.
  • Galileo paper model.
  • Folding Paper Model of the Magnetosphere, from NASA's Goddard Space Flight Center.
  • Mars Orbiter Spacecraft model, 1:24 scale, in pdf format. The Mars Polar Lander is also available.
  • Near Earth Asteroid Rendezvous spacecraft.
  • NASA's Great Observatories Kit
  • Rossi X-ray Timing Explorer
  • Space Shuttle
  • Stardust Spacecraft in 1:26 scale.
  • The HESSI (High Energy Solar Spectroscopic Imager) spacecraft.
  • From the Genesis Mission, a Genesis mission spacecraft model.
  • Terra satellite model.
• Make your own Yohkoh Satellite, from the Yohkoh Public Outreach Project.
• Space Craft International has a free Lunar Prospector.
• Jan Heirtzler, of the Space Science Group at the University of New Hampshire, has a model of the Advanced Composition Explorer satellite. The model is available in 1:8, 1:16, and 1:32 scale.
• The Center for Space Physics has a model of the TERRIERS satellite.
• Geoblox has a sample model of a mid-ocean rift, demonstrating paleomagnetic banding.
• Touch-3D is a CAD package for Macintosh computer which can unfold three dimensional designs to two dimensional surfaces. Their Downloads page includes three paper models created with their software: a telephone, an auto body, and a speedboat.
• Steve McGuire's Print-N-Play Toys has some simple stand up toys, a race car, and a haunted house.
• The Opel Association of North America has a paper model of an Opel GT.
• Pulp Fiction Central and Chris Kalb offer The Spider Kit, including all you need to be the The Spider of pulp fiction fame.
• In conjunction with their educational CD, Bridge to Reading, Owl & Mouse Educational Software has some free software for Windows: Make a Town will print patterns for 10 houses, 8 stores and a library; Make a Village will print patterns for a church, an apartment house, more houses, and more stores; Make a Farm will print patterns for farm buildings; and Build your own Medieval Castle This software is oriented towards lower elementary school children.
• Canon Japan has much of a small RR layout, although it seems to be lacking rolling stock. Canon has more stuff here.
• MacUser/Japan magazine has models of Macintosh computers.
• Ecotruck have a model of one of their trucks. (Japanese)
• CAW's workshop has several models of fanciful robots and spacecraft. The spacecraft seem to be inspired by the Starcraft computer game.

  from Mike Hungerford<chthulhu@sdccu.net>: From the main page there are two links: vopc.htm and scpc.htm, for "Virtual On Paper Craft" and "Starcraft Paper Craft," respectively. The models on the VO page are, from top to bottom, the "XBV-13-T11 Bal Bas Bow" Virtuaroid, and the "Z-Gradt Sun Cannon." The models on the SC page are simply "Battle Cruiser" and "Probe."

• Peramodel has four samples, a Mandarin Duck, a Camel, a Tyranosaurus Rex, and an UltraSeven.
• Oak Leaf Studios have an OO scale signalbox.
• Shelter Systems have geodesic domes.
• Grand Illusions has a dragon, designed by Jerry Andrus of Binary Arts.
• Fujioka, a Japanese fly fishing enthusiast, has models of trout (in Japanese and English.)
• Circus Zaretti has a model circus.
• Inspired by Star Trek, a computer console.
• Various non-English, mostly Japanese, sites, lumped together here because I don't understand the site well enough to provide a description.
  • Alfa Romeo 156.
  • A bunch of buses and streetcars.
  • A car.
  • Streetcar.
  • Simple emergency vehicles. 
  • Science fiction inspired stuff? Page 1, Page 2, Page 3. These are all part of the "Page of Kami Kou Sen, which also includes pictures of other models (apparently not downloadable), a links page, and other paper model related information.
  • Automobiles
  • Orca, Manta Ray, etc.
  • Buses, a trolley, and an apartment block
  • Citroen XM, Citroen H truck
  • This one is Korean.
  • Gansuke has a kingfisher and another bird.
  • Asakayama Syaryou has trolleys.
  • Puzzle land have a dodecahedron maze.
  • Automobiles
  • This one is Brazilian, but my Portugese isn't much better than my Japanese: a Bugatti and a simple little hound.
  • Kami Kobo has an angel flapping its wings.
  • The Industrial Palace of Prague.
  • Toukou: Toyota 2000 GT, Nissan Skyline, RX-7, Honda S800, '71 Fairlady 240ZG
  • Lobster
  • Odakyu Kids has a high-speed train.
  • A CV-3000ark vending machine, apparently used to issue certificates of residence in Japan.
  • A bunch of Fiats and one Citroen.
  • Japanese Coast Guard ships
  • Very simple model of Kaisyu, a ship of the Tokyo Cruise Ship Company.