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
A wall mounted desk is such a space-saver. Multi-functional, convenient, and also simply trendy it can aid you create an useful home office in a snap. Its significant benefit over a regular desk is that it does not take up a great deal of precious area.