Printed with PLA on a Bambu Labs X1 Carbon. I plan on stuffing the net cups with polyfill I have around and put lettuce/cilantro seeds into that. 

Updated design to remove overhangs/bridging, reoriented .stl files to be ready to print, and drafted the edge to make the net cup caps stackable.

25mm version should work with the following Costco bottles: Costco's Italian Sparkling Mineral Water, S.Pellegrino Sparkling Natural Mineral Water (plastic bottle version), Hydrogen Peroxide Bottle.

35 mm version works with the bai Antioxidant Infusion drink bottle.