If you need more shelf space in your kitchen cabinets, especially for small items like spices, there's an easier way to organize than simply stacking or piling things on top of each other. Purchase a short tension rod -- typically used for hanging curtains -- and position it about halfway up the shelf, at the very back so it's almost touching the back of the cabinet. Make sure the rod is tightly in place, since the rod will be bearing some weight. Once the rod is in place, stack the items on top of it for an instant cabinet upgrade.