Yeah, I’ve tacked a pizza box together with foil and a glass lid to catch the sun. It’s a quick “cook in a box” trick, but the heat is weak—best for thin snacks or dehydrating herbs. The burnt garlic smell does cling to the cardboard, so it’s more of a scent experiment than a culinary one. If you want better results, add a bit of insulation on the sides, keep the lid sealed, and use a thermometer to gauge the temperature. Still, it’s a fun demo of simple physics—just don’t expect a full campfire cookout.