The idea of a self watering bucket is not mine. Here are some links that will help you build your own system.
low cost self watering system
build a global bucket
You can see I added scew eyes around the rim of the bucket, there are 8. I added some PVC to make a mast and used old binder twine for the beans to climb. I am sure there are endless ways to do this. If you build a bucket of beans let us see your results!
I will be posting updates on our blog, Changing Green .
We harvest our beans when they are still young and eat pod and all. They are great on salads.
Keep on growing!