Inspired by https://www.kickstarter.com/projects/terraplanter/terra-planter-the-inside-out-hydroponic-planter-pot

Should be possible to print a multi-part mold to make stackable terracotta hydroponic planters.

EDIT: Feb. 7th 2024: Added an interior dimpled cylinder too.

EDIT: April. 18th 2024: Fixed interior dimpled cylinder having 0-thickness walls with a couple tactical "+ 0.0001"s,