Great design by BaGooN. My wife modified it to be large enough for her safety glasses and to have a couple of specific slots she wanted for holding things.
No supports added. Ironing on the top layer and and the Octagram Spiral top fill pattern for other flat surfaces give it a nice look. To get the two-tone look, add a color swap after layer 54 (if using .2 mm layer height). The two-tone look was inspired by dsop's make on the original model.
The author remixed this model.
Made it 3 cm deeper to hold safety glasses.
One version has a slot for holding a USB drive.
Another version has the USB slot and a spot for holding a ring.