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
Pull-out Bathroom Storage Behind The Shower Plumbing Wall: Storage and easy access to the plumbing when you need it! This is much better than the narrow/deep closet I have in the bathroom. This way, everything is easy to see and access.