Pokey end silicon squonk bottes

[Genghis Fogs]

Hi Folks.
I've got an old COV Wraith that takes plastic bottles that poke into the bottom of the 510. I'm wondering if anyone has come across a silicon bottle with the kind of hard tip that might fit it. I kind of hate squonking with a plastic bottle.
Thanks for any advice.

 

["Misfit"]

Have a look here https://www.modmaker.com/squonk-bottles

 

[PacMan20]

Try

https://www.ibottles.co.uk/initial-hdpe-postal-dropper-bottle.html