Add Shelving:
For items that can't easily be stacked (chinaware for example), adding shelf cabinet organizers is a great tool to help maximize the space in your cabinets. This is also helpful for under the kitchen sink to store cleaning supplies.
Stack Items:
Stacking canned items is a great way to use your cabinet space to its full advantage. Keep like items together so that it is easier to locate them. If you have the space, it helps to separate like items. For example, on one side of the cabinet, stack canned vegetables, fruits, legumes, soups, etc. On the other side, stack cooking condiments such as tomato paste, crushed tomatoes, chicken broth, etc.
Storing Awkward Pieces:
Trays and serving dishes can be awkward to store. A helpful solution is to use baskets or containers to hold the trays and serving pieces upright. It will help you to easily retrieve and return these items.