Just thought I'd post pics of what the kids and I built today--totally free! Had two old cribs that can't be resold since they had drop sides. They were headed for the wood pile! So kids and I put them together, zip tied/staple gunned chicken wire around the outside and--VOILA! Homemade chick outdoor playpen! (Mini chicken tractor?) Now I have 24 sf of chicken space in upside down dog crates, 25sf in large kiddie pool, and 16sf of outdoor playpen space. They're growing so fast!!