Simple built-in to create a mudroom and/or storage anywhere from an entry, to kids room or in a laundry room by adding shelves or a deeper bench for sitting. Put drawers under bench or have the seat lift up to store things.
R: first idea for bathroom storage. 55 Genius Storage Inventions That Will Simplify Your Life -- A ton of awesome organization ideas for the home (car too! A lot of these are really clever storage solutions for small spaces.
DIY Storage Ideas - Hidden Key Storage - Home Decor and Organizing Projects for The Bedroom, Bathroom, Living Room, Panty and Storage Projects - Tutorials and Step by Step Instructions for Do It Yourself Organization