Found a nice banana holder on here before, but wasn't pleased with the single orientation, so I made my own. I designed it with a ball joint mount, so that I can rotate the banana bunch to any orientation I desire.
Three pieces total. With the hook being round, it's best to use supports. I may go back and update it with flat surfaces for easier printing.
I added screw mounts for under the cabinet mounting, but I found it easier to use wood glue instead (just give it a day to dry before trying it out).
Modified the screw and nut as someone had issues with it not fitting properly. Noticed that there was too tight of an interference fit, so it modified the mount and nut for 1"-12 threads.
Let me know how well yours turns out.