Build customizable stackable container from anyshape.

Default shape is rounded rectangle, but could be changed to anything you like (writing a shape with openscad code).

I used it to design small container for drawer, for sorting screws.

Number of parts that should fill the given heigth once stacked is now a parameter.
3mf file is an example with 2 part filling 56mm height.

Creality

Ender 3

Yes

0.28

Use a small support, if stacking enabled.