Honey-Can-Do's Closet Organizer with bamboo lined shelves is a great way to add shelf storage to your closet on the cheap. The shelve are wide enough for my socks, t-shirts, and other miscellaneous items. If you wish to add a bit of class to this product, there's even an option to purchase additional sliding drawers.
I didn't want a hanging shelf that would sag excessively over time or tear over daily use, but I could tell that this product was designed with quality in mind. Support is provided by two metal hanger heads which are attached to a square metal frame that fit through two metal grommets.