Always on the lookout for semi-custom shelving options that work for small apartments, we were happy to be pointed toward Smart Furniture. Their grid-style shelving is of a simple design and comes in versatile sizes that could cover an entire wall or just a nook.
To aid you in deciding just what you need, check out their online designer. The website is shows only computer models of the product, so if anyone has further real-life information, please feel free to share. (Thanks for the tip, Zach!)