More ideas from klk
Using a small bookshelf turned outward and a curtain, why not create a closet in a nook or behind a door? ...you could mount a hanging rod across the allotted space and disguise it with a curtain. If the bookcase is not sturdy enough to attach the hanging rack to, simply add a wall-mounted rod, like this one from Improvements. Adding a piece of crown molding in front of the curtain adds to the built-in appeal, and you can customize the size according to your space.

Small Space, No Closet! faux-built in idea. Using a small bookshelf turned outward and a curtain, why not create a closet in a nook or behind a door? Making sure to anchor the bookcase to the wall for stability