All credits go to https://www.printables.com/@_hxr for the original design.
I remixed it because we have 18 pencils, so 9 pencils per organizer is perfect.
I also noticed the lid didn't had any tolerances implemented so I added those and gave the lid a bit of resistance at the end when closing it.
The author remixed this model.
Resized the case to fit 9 pencils instead of 10
Improved lid tolerances