I remember my first experience with my first paper toy which was a boat. I enjoyed it very much and for many days I kept myself busy making paper boat again and again. Till now as a teacher I enjoy making and teaching paper toys, and origami projects to nursery class children. Origami or paper folding technique is itself a very creative hobby and if we talk about paper toys, the purpose is same, only difference is that in origami we are limited to a square paper which is folded and then transforms into any shape or object model. Paper toys can be made from any size or shape of paper and you need some format to follow.
Paper models, also called card models or papercraft, are models constructed mainly from sheets of heavy paper, paperboard, or card stock. Origami is the process of making a paper model by folding paper without using glue. Card modeling is making scale models from sheets of cardstock on which the parts were printed, usually in full color. These pieces would be cut out, folded, scored and glued together. They are generally more popular in Europe and Japan than in the United States.
* 'Print and Play Toys' has many toys to print for free. These toys are in PDF format.
* http://www.thetoymaker.com/2toys.html free paper toys that you can make yourself. Just print them out, cut, glue and enjoy.