I was looking for an inexpensive way to build another coop. Wood is expensive and I couldn't find free stuff. I found on Craigslist a sign company that sells large shipping crates for $10.00 to $30.00 just to get rid of them after shipping. I went there and found a great 4x7x7 with the metal straps still intact. $20.00! I built a screen door and some boxes and am in the process of painting it. I am very excited and will post before and after pictures soon!