2nd part of a collection of “stackers”. These can be stacked in any order to create an desk organizer for pens, brushes etc. Or just for fun.
These are the next generation of this model: https://makerworld.com/en/models/436340

stacker 01: https://makerworld.com/en/models/436352

Stacker 03: https://makerworld.com/en/models/436354