I saw the need for an elevator for my Kid's Hubelino marble system more than they did, but they liked it a lot in the end nontheless..
I had a cheap 12V geared motor with (CM-370-1260 w/ 10 RPM) still laying around from another project and it turned out to be just perfect for this case. I purchased mine from Ebay.
Printed my version in Prusament Galaxy Silver with 0.2mm layer height. No supports needed.
The bottom plate can be clipped into a Hubelino ground plate and it kept in place this way.
The author marked this model as their own original creation.