For utility closet door. have cabnet doors on front to use as a pantry Love this idea for the basement, book shelf/hidden door for extra storage for kids stuff. Basement Basement Storage Design, Pictures, Remodel, Decor and Ideas - page 16
Idea for tiny house if you have stairs to loft. The depth of space under a staircase can be sufficient for a built-in entertainment center that houses a flat-screen TV and a bookcase to boot, along with drawers for remotes, movies, and game accessories.