My nomination for most versatile wine rack: the ultra-compact, exceptionally stable Houdini Wine Rack, which fits in a refrigerator or a small cabinet and folds flat when not in use. Each modular unit expands to fit four bottles; multiple racks can be connected to fit up to 48 bottles. The Houdini Wine Rack is made of high-tensile-strength wire with plastic clips and costs $22 at Amazon.