In emergencies and other times it is easy to grab an old satellite dish, mirror it with foil Mylar, or even pieces of real mirror and use it for a good number of things.
This dish has been lined with 2 inch round mirrors. They are glued on with normal carpenters white glue and every once in a while one falls out, but it is easy to reglue. Always be very careful when using parabolic‘s like this to never ever ever leave it focused and forgotten where it may eventually catch something on fire. Never. You may burn down your house or someone else’s house. Never said it in a car to transport where the sun can’t get to it or certainly you may lose your car. Always set parabolic‘s upside down when not used to eliminate the chance of fire.