I love self-watering containers. We currently have 7 Earthboxes going in our home garden. The gent at Arms Family Farms builds some big ones.
I homemade a few containers out of rubbermaid bins and garden irrigation pipe. My problem was finding plastic that is UV protected and when they fell apart I just bought more Earthboxes. My daughter likes the eggplant-colored ones.
Tomatoes, strawberries, peppers, and corn are regulars for our boxes. This year we are trying some blueberries and as the season progresses will add a few new things as well.
Here is the video by "Leon" who is referenced by Arms Family Farms a lot.