Corner shelves can be a great way to make use of space that would otherwise be wasted, and they can add aesthetic appeal to a room as well. There are a number of different options for corner shelves regarding size, height, depth, and whether the shelves are freestanding or wall-mounted. A single, wall-mounted corner shelf can look nice, for example, but a corner hutch designed to fit perfectly in an angled space can add a lot more utilitarian value to a room. Keep in mind that it is relatively easy to build corner shelves to fit a certain space if it is not possible to find pre-made ones that will work.
Other options for corner shelves involve the materials that will be used to make the shelves. Wooden shelves are quite common, though "floating" glass shelves can look nice as well. Decorative metal shelves can give a room a more modern look, and wire shelves are great, inexpensive choices for mounting in closets. Some can even be cut and modified as needed to fit into a designated space, though this can be more difficult with corner shelves, which generally need to be fit to size the first time they are cut.
Corner shelves may be low, approximately the height of a short bookcase, or they may be taller to reach nearly to the ceiling. Whether short or tall corner shelving units are chosen is based on the size of the room as well as the amount of storage that one needs. A shelving unit that is too large can overwhelm a small room, but it can also help to balance a large room as well as add a great deal of storage. Some corner shelving units will have enclosed cabinets on the bottom to keep items out of sight, with open shelves on top to display collectibles or other decorative items.
If one is installing wall-mounted corner shelves, be sure to keep weight limits in mind, particularly with "floating" shelves that are not reinforced underneath with extra brackets. Glass shelves can be a great way to add extra aesthetic interest to a room, and can be a good choice for displaying plants or collectibles, but are not a good choice for heavier items like books. Corner shelves do not necessarily have to be very deep, either; they can still be functional or visually appealing just because they add extra visual interest to a room.