In Island kitchens, the island is the central focus and organizing principle. Sometimes one side of the island is for working and the other side is for casual dining. A kitchen island can be a cheap and attractive way to expand your counter space. An island can also help you add a second sink, dishwasher or oven to your kitchen. Today, a homeowner has the option of islands made of the same materials as the base cabinets and countertops for an integral look.