I have never tried one that small. I used to use big 5 gallon water bottles when they were still made of glass. But that was years ago. Now they are mostly, if not all, plastic. Time marches on.
I'd like to see the case you're planting. I favor glass cases over bottles really. I just like the looks of a case.
These are cute and several could be hung in a window. I don't think one of my cats would leave them alone though.
http://miniatures.about.com/od...
http://www.hooksandlattice.com...
I do have a bunch of old Mason jars and I'm thinking about planting several of those as an "arrangement".