After seeing the egg twister on the front page some time ago, I was inspired to create something similar but for larger fruits (oranges in my case).
I printed this thing with rainbow PLA, because I had some of this stuff left over from a previous project and I like how it turned out!
I designed this part using FreeCad (the Realthunder fork : https://github.com/realthunder/FreeCAD) and I have included the CAD file with this posting in case anyone wants to make changes to the design.
The author hasn't provided the model origin yet.