I couldn't resist the remix call on the turn button.
Strangely enough Thingiverse doesn't allow me only to upload the .3mf. So I've included the full solid version as .stl.
And while I'm on it: a simple mirrored version of the base such that screwing on the reservoir is done clockwise instead of the other way around.
I used Fusion to reduce the faces in the candy from the thing above and to cut the handle from the original button.
Next I used my slicer -Cura 3.2- to merge, scale and export as combined stl (3mf).