Final solution for your Z-axis visualizing problems. Attach your favourite visualizing-model with two-sided tape or glue to this mount.
This model requires two 3mm diameter and 2mm height magnets, push to fit. Two magnets keep up with the z-axis movement better than one, because physics. This is precision you have never seen before in your z-axis visualizing.
For smoother ride, you can grease the sides, but not the bottom! You will need friction on the bottom for the mount to spin.
Print with 15% infill or whatever and 0.2mm layer height or what pleases you. Prepare the glue or two-sided tape for further assembly.
The author hasn't provided the model origin yet.