UPDATE: Thanks to DroneMang who fixed some issues with the models slicing in Simplify3D. I've added his versions to the downloads (xxx_repaired).
P.S. I haven't made a print with these models yet, so ask questions in the comments if something's up.
This is a tile-able self watering planter. It has a slot on the side where you can attach additional planters
Depending on your printer or printer settings, your mileage may vary on whether the watering cup is fully water-sealed. I recommend a layer or two of clear lacquer to close up any gaps.