There is a cheap and historically interesting way to make models. It is using graphics that are printed on card stock and then cut out and folded and glued to assemble the model. These models can be of anything. It is part puzzle and all fun. It is cheap and can be done by anyone and anywhere. They are of vehicles, buildings, air and water craft as well as figurines of animals, people or more.
Some are actually considered toys as they are functional and actually fly or have moving parts. Here are some links to sites that I like for this recreational and interesting hobby. I put these here for myself as a way to keep track of them as well as others. Enjoy and go check them out! Many even have free samples that are really fun to start with.
Of course there is wikipedia. You have to look there.
http://en.wikipedia.org/wiki/Paper_model
On of the many commercial sites that I have visited is Fiddler’s Green. It is a community of modelers and designers who love the hobby have a lot of fun at it. They have a lot of interesting information on the models they have. There is usually information on the model subject and its historical and social significance and also often on the model designer as well. That part is almost more fun that the modeling.
https://www.fiddlersgreen.net/
http://www.papermodeldownload.com/
http://www.papermodelhouses.com/
http://www.papermodeldownload.com/home/product-splash-stub/
http://www.ecardmodels.com/index.php/free-models.html
http://www.cardmodelers.org/download.html
http://www.scalemodelnews.com/2009/05/free-card-models-to-download-from.html
http://www.cardfaq.org/faq/freeb.html
http://www.cardfaq.org/faq/
http://www.ecardmodels.com/
http://www.papermodelers.com/forum/card-models/
http://www.currell.net/models/
http://www.currell.net/models/mod_free.htm
http://www.zealot.com/forum/forumdisplay.php?f=633
http://www.cardmodelers.org/
http://www.bobscardmodels.net76.net/
http://www.paper-replika.com/index.php?option=com_alphacontent§ion=10&Itemid=169
http://www.cardmodels.info/
http://www.grubby-fingers-aircraft-illustration.com/card_models.html
http://www.freerails.com/view_topic.php?id=3706
http://www.kbismarck.org/forum/viewtopic.php?f=6&t=1394
http://www.paperpanzer.co.uk/Links/Site%20Links.htm
http://www.ww2aircraft.net/forum/modeling/card-models-free-downloads-31502.html
http://www.cardmodels.info/free-models/
They are often used in other games and hobbies. Some are used in historical games, some in fantasy games and many are used to establish scenery on model railroads.
http://winterof79.blogspot.com/2012/04/free-c20th-download-and-print-buildings.html
http://www.papercraftsquare.com/douglas-dc-6b-water-bomber-free-aircraft-card-model-download.html
http://www.largescaleplanes.com/Photostory/JimMerrigan/Paper/Paper.php
http://www.scalemodelnews.com/2013/03/free-models-on-offer-from-ecard-models.html
http://www.tomtom-net.de/resources/cardmodel/cardmodel_f.htm
http://tektonten.blogspot.com/2010_11_01_archive.html
http://www.outerzone.co.uk/plan_details.asp?ID=2032
http://www.newrailwaymodellers.co.uk/Forums/viewtopic.php?f=6&t=29587&start=525
http://www.papermodelers.com/forum/aviation/5476-my-dga-models-1-200-a-13.html
There thousands more pages and places on the internet to find information and sources of files to print and model. Some are very basic and the result of unskilled designers and some is amazing as to the detail you can get out of a piece of paper. No matter what you are interested in, take a look. My grand daughter still has the first models we did and talks about them often! Make a memory for someone special!