The LeafyPod plant pot has a self-watering system that you can automate and customize depending on how long you're away, which is ingenious for anyone who's away from home for long periods of time.
Start with wood pot supports (E) for the potted plants. Draw a 5-1/2-in. circle centered on the pot support (E) boards. Standard six-inch pots will stand a bit proud with the 5-1/2-in. hole.