The top of the bottle is cut off, and two inverted 'T' cuts are placed on opposite sides, allowing four "wings" to be folded out. These wings would rest on the lid of a container of hydroponic nutrient solution, keeping the bottle suspended. There are several holes drilled in the body of the bottle to make it porous.
And with the top of the bottle, you can make a little hat for baby plants so they don't get cold, or some sort of wind turbine, or decorative pinwheel, or something. 🌱 🍍 ♻️ :herman: 🤷 Yay #solarpunk!
Sunbeam City is a anticapitalist, antifascist solarpunk instance that is run collectively.