These floating shelves are much cheaper than Ikea's bookcases & look cooler too! If you can find them in Ikea's "as is" section for less AND on their 10% off "as is" Wednesdays- big score! Or look for these type of shelves at other home improvement stores. [IKEA lack shelves as bookcase]
Expandable Over The Sink Shelf--got a bamboo version of this. Really makes a big different in the kitchen and in the small space we have. Wish I had purchased a prettier one---like this one--but what I got gets the job done. Plus, we have a small pull-out basket for sponges and such with ours, so I can't complain THAT much!