Damn, Vashper is everywhere!

That reminds me --- How about some examples of food prep using things not designed to do so ?
In the steel mill common practice was to bring a mason jar filled with soup or stew.Jar is well wrapped with aluminum foil and put on top of one of the many furnaces.It was ready to eat at lunch time .
One of the welders surrounded some preheaters wih flash shields to hide it then cooked some steaks.He forgot about the smell - right to the foreman's office.
I was once told of the practice to use expantion joints on a carrier to crack open walnuts !! True ?