Love these creative cardboard costumes! Such wonderful material, cheap. easy to work with, flexible ( fold and pull over hard edge until you get the shape you want). These costumes are by design students - cardboard catwalk.
20 insanely creative ways to repurpose your old denim jeans
Recycled jeans notebook or planner. Use a regular notebook, and cut up them jeans that the kids have outgrown. Also a good idea: using a larger notebook and a patch/screenprint from an old favorite shirt.