A child's wading pool would also be a great idea for extra garden space and if it had a hole in it, you would probably get it for free, or near to free. Half barrels and halved small water tanks are other ideas for expanding the space of small gardens.

I've even seen hanging baskets for tomotoes, strawberries and a few other plants. I guess there's lots of easy ways to make a garden, even if you have a tiny space.