Very nice set for paint brushes.
This was created by
author :

https://www.printables.com/model/274897-paintbrush-holder

There are some details that have been changed.
Added:

Base.

The height of the base is now around 10mm and the round tip brushes have a much better grip.

Author :

https://www.thingiverse.com/thing:6402721

Sides. Remix.

It was fixed and honeycombs were added.
Author :

https://www.printables.com/model/296118-dr_lipo-paintbrush-holder-full-hex-side

I also created a hexagonal water jar.

Everything should fit in the same honeycomb style.
I also added my remix:

https://www.printables.com/model/688284-honeycomb-paint-palette

Honeycomb Paint Palette

Success and good luck in your creativity. Let the world become more beautiful with 3D printing.