I got annoyed having my nail polishes sticking up out of my boxes every which way and designed a shelf. It's pretty straightforward; you print on its side and can change the height which will change its width once you have it standing in its correct orientation.
I use a Bambu P1P so I didn't need a brim, but depending on your print speed/printer you might. In my pics I used Hatchbox's Metallic Finish PLA, so I used Bambu's preset PLA settings but slowed outer wall speed to 100mm/s instead of 200mm/s and left everything else the same. Took about 10 hours to print. Uses around 370 grams of filament at full size.
The author marked this model as their own original creation.