Found this Idea in the video of pocket83 and had to do a 3D printed version of it
The model prints without supports if you use 0.2mm layerheight.
For furhter hardware you need at least 2 M5x20mm hex nut screws.
You can screw them directly in to the model. If the fit is too tight you can tap the holes before screwing the screws in.

The author marked this model as their own original creation.