What a great idea. I don't have much space here for what I'd love to grow. I have an old laundry basket just the same. It's broken near one of the handles so I don't use it anymore. I'm not sure about the watering or heavy rain as it looks as if the soil would wash out. I guess the bottom area could be closed in a little more to keep it all in the basket. Hessian might work or some of that coconut fibre used in hanging baskets.