Are there any containers or shelves that can increase storage space in a refrigerator?

There are refrigerator food storage trays that can increase storage place in a refrigerator, such as the Fridge Binz trays. Food storage trays typically come in different sizes to allow them to be stacked for maximum storage space.

A wire rack can be inserted into a refrigerator to provide an additional shelf for storage. A wire rack is typically the same style of refrigerator shelving and can provide space, provided that the legs fit the built-in shelving. Refrigerator bins can be added to separate food into different compartments and may contain lids to allow for labels to be attached. Specialty bins are available that allow for wine and bottle storage.