An architect in Switzerland had a nifty web site called FoldSchool – see it at foldschool.com.
There are a few designs for cardboard furniture that can be made by kids. They are cool designs and functional. The supply list is short and they can be recycled when you are done using them!
We highly recommend visiting Fold School and that you get folding! We are planning to make a foot stool to start to rest our weary feet. What will you make?