Web Designer Depot has images of 13 artists who work primarily in paper. Not ink or paint on paper, just paper. Here are three of my favorites:
Top to bottom, that's Peter Callesen, Jen Stark and Bovey Lee. There are all kinds of others things shown, including carved books, mathematical abstractions and portrait busts.
I heard a story about how Stark got started with her technique a while ago. If I remember correctly, she was going to study in Paris for a semester and there was no room in her bag for a bunch of art supplies. When she got to France, she couldn't afford to get a lot of supplies there on a limited budget, especially since she wouldn't be able to bring them home. So she grabbed the cheapest thing she could find in the art shop, which was a pad of colored construction paper. That turned into one of the stacked-up cut-out numbers shown.