I got some huge pieces of cardboard was wondering if there is a tutorial on how to make a cardboard coffin or if anyone has ever done it and can provide any tips. Thanks y'all

Has anyone used cardboard to build their props or parts of their haunt? I found a great website that shows how to build scenery from corrugated cardboard. http://cortecscenery.com/ If you're using it in the house, garage or carport it's a super cheap, easy way to build your sets. I'm...