I made my first failed attempt at a solar oven. I was a black jar filled with veggie dogs and chili inside a larger container lined with aluminum foil with a clear top. It made the food warmer than room temperature, but not warm enough. I was thinking maybe the wind from moving was cooling the container too much. I was thinking about trying to make one out of a small cooler and trying to make it a smaller version of this
Has anyone successfully made something like this? I'm also trying to make it light weight and waterproof.