If you have a corker then reuse your wine bottles for your mead.
However if all you have saved up is beer bottles and you don't currently own a good corker, like me
, then beer bottles work just fine. 12oz is just about right for me to drink at one sitting. I don't find my meads and wines to be as good the second night after opening, so that is another argument for beer bottles.
If you are doing a still mead then any glass bottle that provides a good seal will work.