When a friend's daughter and toddler grandkids moved back home while daddy was overseas, Elaine put a screen door on the playroom. Elaine and her daughter were able hear whenever the kids needed something, the kids had a nice large playroom, and best of all... the toys stayed in one location. Elaine insists it kept her sane for the 2 years they lived with her. I thought it was a clever solution because Elaine is one of those overly fussy "no, don't touch that.." sort of person.