My sister and I came up with this design to hold her documents and papers vertically, in order to save some space on her desk and keep it tidy.
The holder has four slots, each one being 10 mm wide.
We also added a small tray on one side to store small items that would be easily lost otherwise. The openings on its bottom were done through modifier meshes in Prusa Slicer.
Designed in Autodesk Fusion 360 and printed on an Original Prusa MINI.
Printing this model using the .20 SPEED profile takes roughly 14 hours.
The author hasn't provided the model origin yet.