The author remixed this model.
Instead of the Brother P-Touch Cube, the model is for the Smart Charger C4 from ISDT.
Based on the idea of the source, I also drew an insert for my Smart Charger C4 from ISDT. It takes up a 3x3 area of my IKEA ALEX / MALM system and therefore fits seamlessly into the system.
Thanks for the inspiration!