So i made this design to hold my miniature painting brushes, it works with all my small brushes no problem
This is version 1 so i will be looking at comments and sugestions to make it better,
I divided the bottom part of the holder in two so you do not have to use supports, then you can glue it together, you could also print only the part "bottom top" part and it will also work, not as nice though.

I printed this with my neptune 3 pro with both the 0.2 nozzle and 0.6 nozzle so it should work with the 0.4 nozzle too

Feel free(and please) to remix this design