Make an Ambient Lamp Out of a Milk Jug This portable lamp is just a gallon milk jug filled with water, with a headlamp pointing into it. It's a clever repurposing trick that creates a great soft light perfect for reading, writing or illuminating indoors or out. A headlamp is usually a square light with a band that goes around the head. The lamp itself is then positioned on the forehead. The strap is adjustable and the light is fairly bright. You can find a headlamp at a discount department…