water crock accessory

So after a year of spilling water while filling my ceramic crock from a 5 gallon bottle (I fill my own), I happened across a video that showed just placing Saran wrap over the mouth of the bottle and sealing with a rubber band. That trick let me fully invert the bottle with minimal spillage. All I needed was something to pierce the Saran wrap and no more spill.

I drew the 2d shape in Qcad, imported into Scad where the shape was revolved to a solid, then sliced in Cura.

Fits standard 2.5 ga