Many versions of self watering containers, also known as self watering grow boxes, self watering pots, and self watering planters are sold online, but you can make them yourself for a fraction of the cost out of some easy to find items.
GARDEN CRAFTS :: DIY Herb Drying Rack :: Picture frames + screen + chain = Herb, fruit, or veggie dryer. -- Or as a rack for drying painted papers, and other art projects. Platform feeder for birds. Imagination, go wild!
Hugelkultur: Sepp Holzer explains how burying branches, even whole trees, in raised beds allows the gardener or farmer to grow an incredible variety of food, even on the most unpromising upland or arid land. (scroll down) Sepp Holzer is awesome!