1. A set of "shoe slotz" that will literally double your shoe space.
::pages Carrie Bradshaw::
Get a set of six from Amazon for $14.99.
2. Clear shelf dividers to prevent your shirt stacks from toppling over.
3. A wardrobe app (Stylebook) that's basically like having Cher's closet in Clueless.
It shows everything in your closet, helps you put together outfits, and collects information so you can know the price per wear for every item of clothing.
Download it from the App Store for $3.99.