Powder Room Shelf Ideas . Specifically for half bathroom, take full advantage of each room. Décor like the plant can be placed on top of the shelf. Interior Design Ideas for powder room storage Spaces from www.faburous.com The chair rail encourages the use of a split wall treatment with one half being a focal point. Navy blue walls and mosaic tile anchor this miami powder room by nicole white designs interiors. Rich, refined, and oh so luxe.