From 1940s radio show “Alex Prescott, Wife Saver”:
A sheet of asbestos paper rolled into a cone shape will act as an oven when placed securely in a campfire. You stick the small end in a fire and it gives you a place to bake apples, eggs, potatoes and hot dogs. Toss them in like a horn of plenty and the fire lapping up the sides of the asbestos will turn them quickly into something to eat.
Eat them on your picnic table covered in peeling lead-based paint and have a big helping of red m&ms for dessert. Don’t forget the lawn darts!!