Here is another solar oven that lets you cook your meals outdoors using sunlight. The SunCore Solar Oven comes with a sundial indicator to let you know the best angle for maximum heat. It also has a built-in thermometer, so you will know when your food will be ready.
You don’t need any battery or fuel to use this. Simply release its support legs to set up the oven, unfold its reflective panels, fill the inner tube with your food, and use the adjustable knob to direct panels toward the sun.