To keep my household clean and my wife happy, I tend to fill cleaning liquid into my robot vacuum every evening. This is a mix of distilled water and some cleaning fluid, filled neatly into 1000 ml bottles from "Octopus" (or rather amazon).
Without a spout, filling tends to get messy - so I designed one. It should also fit on other bottles with 25mm threads.
I printed mine with red PETG, just because this spool was loaded. Might print one in TPU if I have the time.
Printed with tree supports - but they remove quite well and are on the inside, so clean surface is not really important.
The author marked this model as their own original creation.