DangerouslyFun shows you how to make a fairly safe cardboard stool –
“This project ranks low on the danger scale, but it is still fun and may impress your guests. The stool is two feet tall and has been tested by humans up to 200 lbs. You should be able to find large sheets of cardboard at art supply stores for a few bucks. If you can’t find one for component C that is 72″ long, you can use a 36″ sheet and just make the long strips separate pieces.” – Link.