Custom reservoir help

[gorillamanor]

It has become time to build a new PC, and with it comes the opportunity to do a themed loop and case. I am an avid Fallout fan, and the post on here from last year of the father/daughter/son build really inspired me.

 

I have some old vintage coke bottles sitting around, and the idea is to use one as the reservoir. Originally, I was planning on cutting off the bottom and putting a different reservoir inside it (very much how Boris did his vodka cooling). However, the coke bottles seem to be too narrow for that. Is there anyone here with experience with something similar? How would you go about doing this? Thanks

[MaratM]

If you skilled enough you can drill a hole at the bottom of the bottle and use some clear water resistant epoxy to glue in a male-female fitting or a pass-through fitting