More to explore:
how to organize a small closet; small closet organization ideas
Small Closet Organizer your can build for less than $50. Really like this for the downstairs closet to make more space
25 Lifehacks For Your Tiny Closet
Hang a shelf upside-down, and the brackets become separators.
How to turn an IKEA Expedit bookcase into an upholstered storage bench
shimmer *mermaid* tile