Doors on the stairs to keep the noise down, heat down, and/or pets on one side or the other. Also pretty! Like the glass on these. I like the idea if the laundry room is upstairs. I wouldn't want to carry a hamper through doors on stairs
what if you took this idea inside with a slightly different design and had some form of "locking" from the inside that can be released by smoke detector from inside plus a manual saftey release even a child could release.