watch this video - http://www.youtube.com/watch?v=aZo20t6UOjc
It looks like that will be pretty helpful.
However, I'm not too close to Mexico and don't have access to those kinds of bottles.
I MAY be able to find one somewhere from one of my last trips to Ciudad Juarez, but it's not likely.
I'm using a Barg's root beer glass bottle I found that has a very vintage look to it.
This is a picture of it here:
http://2.bp.blogspot.com/_OFpCCX-zBts/ShRKaNlbkQI/AAAAAAAAEbE/NbU1TRDr6fM/s400/barqs_bottle.jpg
I like it, because I think it even looks the part of the Nuka Cola bottles that were given out during E3 '08.