why not take the LACK shelf and flip it, so the shelf side is facing into the room? You might need to get a little creative with the mounting hardware, but this is a great way to create some semi-concealed storage and reduce visual clutter.
3 Ways to Style and Use Ikea’s Kallax (Expedit) Shelf - The Everygirl
Mid-Century Modern Sideboard: When you can add wood to an existing IKEA bookshelf, it’s hard to resist. Oh, and the mid-century feel of this hack is basically genius. (via IKEA Hackers)