My mother wanted icicle ornaments but couldn't find ones she wanted. I printed a set of these in white and a set in clear high temp PLA. She hung a mix of both on her tree and loved it.
Print in vase mode except for the hook. The hook should just snap in, if not try scaling it a bit.
It was so long ago when I actually printed these that I forgot I also scaled the icicle in Cura to be longer and skinnier and thus much more icicle like than the original. I think 15ish mm in X/Y and to like 120mm in Z
0% - Spiralize outer contour
Use vase mode or spiralize outer contour, depending on your slicer.
I removed the original hook in Meshlab and made a new one in FreeCAD 0.17