Modular Organizer

Base plate with slots you can move in Tinkercad to your desired position, and replaceable walls with designs on them.

Print the plates flat on the print bed.

To edit, visit the file in Tinkercad. Edit it online for free at https://www.tinkercad.com/things/210Lo3XYGR2

The wall plates I made are all borrowed from the 100hex project: https://www.thingiverse.com/thing:2477471 and https://tecnoloxia.org/100hex/