i've been reading about self watering containers, the earthbox, etc. and wanted to make some that were nicer looking than buckets. i used stuff lying around the house inside a clay pot. (the pot has no hole for drainage)
it's half of a pop bottle, the bottom of a plastic ice cream container, and a 25 cent funnel. i poked holes all over the bottom for drainage and air circulation.
(yes the bottle is taped in) i wasn't too worried about the plastic since this is an experiment, and it's mostly from food containers. they are working great and my plants are growing like crazy! i water it less than once a week.