Over the door storage baskets...link also includes site to purchase other over the door storage for pantry, cabinets, and more.
Back of Closet Door is organized with Container Store Elfa unit. Organized Linen Closet
Organized Bathroom Linen Closet Anyone Can Have - Kelley Nan- Elfa door system with medicine storage solution
Entry closet organization
The $20 (Or Not) Storage Closet Door Post 4: The Reveal « Pink Toes and Power Tools
Elfa behind the door wall system for organizing crafts, gift wrap and supplies. Such a great way to maximize space. Iheartorganizing
Closet Door Storage Space ~ To stock up when on sale. Hide in hallway bathroom closet
On closet door back
Wall hanging storage with 3 IKEA baskets; no instructions on site. Could this be made into a clothes hamper for a small space?
Condo Laundry Closet Storage Ideas