I created a 3x2 Gridfinity based solution to hold 6 (six) Craft Smart paint bottle. The holes are roughly 35mm in diameter. I put them on the 3x2 gridfinity honeycomb wall shelf I made.
https://www.printables.com/model/239927-3-x-2-gridfinity-honeycomb-shelf
The author hasn't provided the model origin yet.