This is the version of the sub-irrigated (aka self-watering) 5 gallon bucket planter that I'm going to use this season. Note that it is made from just one bucket.
The two (sleeved) bucket version is in more widespread use on the web but I don't agree that it is necessary. Even if you can find them free, why waste a valuable bucket if you don't have to.
Instead of a rigid material requiring the drilling of drain/aeration holes this soil platform is made from aluminum window screening. Upside down plastic party cups support the screen platform. These could just as well be recycled food containers or cut from plastic water bottles. Cut them with scissors to create the height of the water reservoir.
The soil wick is formed with a deli container. It could be a yoghurt, sour cream, butter or other food container of this type.
The objective was to design a bucket planter that doesn't require the use of power tools. You can make this planter with a pair of scissors.
Soon there will be heirloom tomatoes, peppers and other delicious vegetables produced by these easy-to-make sub-irrigation planters. They will out produce in-ground and raised bed drip-irrigated plants while saving water and your valuable time. It's the modern green way to grow.