In this video you'll see how to; - Start a fire using an old light bulb and water - Get tinder smoldering using plastic wrap and water - Make a hands free liquid lens with a picture frame and plastic wrap - Ignite tinder using a water bottle - Start a blazing fire by reacting water and sodium I love the idea that simple resources can be utilized to help meet our basic survival needs. Water is about as basic and abundant as it gets. To use it as a liquid lens you just need to find a way to make it round, clear, and hope for a sunny day! Then, your imagination is the only limitation. :)