In the past I used to store my sewing threads in a cup, but i got bored , each time i needed one thread , i had to drain the cup to find the right one but also all spools made thread spagetthi, so I looked into thingiverse and found this one: https://www.thingiverse.com/thing:3221313 but it was still too big for my purposes. So i quickly created my one one: its super tiny and just eats about A5 size from 3mm Plywood

The Design is created by PythonSCAD. Source code is included. it can easily be adapted for different size.