Not that I have an empty closet, but i do like this."Closet Office" - Turn your un-used closet/reading nook into an office space. Maximize the little space with lots of shelving and storage *LIKE CORNER DESK/nook & shelving for office corner
Keep all of your cleaning supplies in an easily accessable space with Thomasville Cabinetry's Utility Cabinet. I think this idea could be easily modified on a standard kitchen cabinet with a little ingenuity.