In all the houses I've lived in prior to this one, I've never had enough kitchen space for my addiction to dishes. So ... near and dear to my heart are cabinet expanders. Yes, I know. I'm a professional organizer. I'm not supposed to have storage problems.
Oh. well. That's why they make cabinet expanders. :) Here are my favorites:
This two-piece expander is great for cabinets that are too small for regular expanders. As you can see, it comes apart, allowing you to put the two small sections into your cabinet and connect them once they are in the cabinet.
The one below flattens and can be extended once it is in the cabinet.
This solid piece comes in several sizes - great for plates, saucers, bowls, cups or food items. It is especially nice for tall cabinets with sparse shelving.
I love the vertical expander below - a wonderful alternative to stacking. You can reach the stored items without having to move other things - not the case if you stack the same items horizontally.
I've found my cabinet expanders at WalMart, Bed Bath and Beyond and similar places.
More on kitchen storage: