This is a paper towel holder that can clip onto the side of my desk so I can keep them close by during printing.
It uses the same rods as a Prusa printer (8mm). Desk thickness is 15.6mm, however it should be easy to adjust for any other table. Feel free to make any adjustments you want.
Best to print two lying flat. No special requirements, I printed mine in Overture Matte Black PLA just cause I had it on hand. Have seen no noticeable problems with it.
The author hasn't provided the model origin yet.