My workspace in my last apartment was a craft cabinet, so a closet was a step up. I painted the bottom portion of the wall with leftover paint and built a desk with wood and metal braces from Home Depot. I hung acrylic shelves on the left wall and added a custom corkboard, task lamp, filing cabinet, and calendar. I left the original closet shelf in place (to hold purple containers I already had), so that the space can more easily transition back to its original purpose some day. Overall I spent about $150, and now the closet is the perfect spot to get creative and messy.
(Images: Kim Rinehimer)