There is always room for a kitchen island and here is a great example. This island is nothing more than a base cabinet with the toe kick removed and replaced with four casters. Place a counter top on it (great place for a butcher block top) and you have a mobile island. Create a niche for it to slip into and you have a usable kitchen island without permanently taking up space in your kitchen. You can also incorporate this idea into a large kitchen with a permanent island for additional flexibility during parties.