Designed my own small desk organizer, because stuff was taking up too much space just lying around. Thus the mostly vertical storing...

Printed it in 0.30mm PLA with 15% Grid infill. It's a bit flexible due to the thinness but not wobbly at all while standing.

I included the project file for Prusa Slicer and the gcode.
It takes about 4.5 hours to print and weighs about 96g.