Self-watering containers make growing fruits and veggies a breeze and are ideal for gardening in small spaces. Construct your own reliable waterer with a few easily scavenged materials and about an hour’s worth of time. From MOTHER EARTH NEWS magazine.
Self-watering planter made from recycled bottles. (I'd want to try this with a 2-liter plastic bottle, and cut the top off, so I could get the root system out intact for transplants.)