Wall Mount Pen Holder

I have limited desk space to put a normal pen/pencil organizer but I do have some free wall space on the uprights on my desk. So I designed this organizer to be able to hold a sharpie marker with a few pens and pencils. Two small screws are using threw the ears on the sides to mount the holder to a wall.

This is one of the first practical prints I designed from scratch and am pretty happy how it turned out. I use it every time I'm at my desk.

I have included the FreeCAD file for this, its a bit of a mess as I only kind of know what I doing. Feel free to modify it for your needs.