You can make a nice set of drinking glasses out of empty glass bottles. Just make sure you follow all the rules. Be careful!
How you can create a glass from a glass bottle. Bind a thin rope soaked in combustible material around the place where you wish to see the edge of your future glass. Set the rope on fire and wait for the crash sound. As soon as you hear it, put your glass under the cold water. You may not succeed at the first attempt. Round your glass edge before using it.