remove the necks entirely to make tumblers -- Glass Bottle Cutting- You can soak a piece of yarn in nail polish remover, tie around bottle, light with a lighter, let burn all the way around for about 10-15 seconds then dip in bowl of cold water perfect spilt every time.
FOR BACKYARD FUN, NO BUGS! All you need is a package of Mason jars, some cotton string and some liquid citronella (find it in big jugs at any home-improvement store and even some grocery stores). Use a hammer and nail to poke a hole in the top of the lid, then pour in the citronella, put the top on and drop in the wick. Allow the string about 10 minutes to soak up some oil.