Another great design to make us hate our furniture: the Slot Sofa by Matthew Pauk. This stylish and sensible sofa is a modular creation that neatly allows a coffee table to be stored inside. When it's time to party, the table comes out and the gap in the middle is replaced with a comfortable pillow, with the extra pillows available for additional seating. This sofa is the most functional and diverse piece of furniture you don't own. It's design is derived from the functions of both sofas and ottomans. Makes you wonder why you bought that corn-based ikea couch, doesn't it?