Storage in small baths is essential to a functional space. Sarah Susanka, author of Not So Big Remodeling, encourages homeowner to get innovative in small baths. Walls, which are typically four inches thick, offer a place for additional storage whether it's a recessed medicine cabinet or open shelving. \"Little indents in walls can be great for all the stuff you have in bathrooms like soaps and shampoos,\" Susanka says. \"We don't often think of it, but it's space and it's there and it's easy to use.\"