I was running early for my class last night (remember, I am this) so I stopped in the bookstore for a few minutes. I was fascinated by these recycled cardboard vases/pencil holders/"things". They were very Slinky-ish and I couldn't put one down. Until I saw the price. $26. Called "liquid cardboard" and made of that honeycomb packing type stuff, they were really neat. Did I mention they cost $26?
The company that makes them, Cardboard Design, also sells cardboard furniture- tables and shelves- but at a much more reasonable cost of about $150 for a large desk.
Check out this crazy cardboard chandelier made by Anneke Jakobs of the Netherlands...out of Chiquita banana boxes.