I found this idea and liked it a lot. As the worlds population continues to grow we will have to learn ways to grow more food on less space. I thought these barrels were a great idea, whether you have a small back yard or patio for growing things, or you wanted an herb garden close to you back door. They seem to be easy to build yourself with limited tools or skills. I liked the idea.
http://www.youtube.com/watch?v=ufEQ6ZljJBE