This is a completely customizable project for a notebook stand/docking. Feel free to adapt for any other need you have, I'm already using the same principles for making a nightstand cellphone dock.

I may have to design proper reinforcements for the elbow joints, but for now, just screwing the thing in place seam to do the job.

You can get the threads.scad here: https://www.thingiverse.com/thing:1686322

And the cubes.scad here: https://www.thingiverse.com/thing:4341723