A slim floating bookcase is a nice, clean way to add storage to dead space.In other words, make your dead space COME ALIVE. Get the directions here on how to turn an Ikea bookshelf into a floating one.
just a Space divider and ghost chairs. Another one where they put the long table up against the wall. Instead of chairs, have wall-hugging storage benches in an L-shape, with chairs on the 'living room' side and on the end for a big party.