I have taken inspiration on this from user;Darth Vader. I have changed some basics of the design to better it for my needs, for one, I have made different setups with 3, 5, 9 & 10 holders for paint depending on how many you need. And also changed some measurements, so for each added slot you add 30 mm (1 (3/16) in)

Easy to print without any supports needed.

For other configurations please leave a comment.