Step-by-step tutorial
Final result!
All you do is press a sheet of foil around a car to create an impression. It helps to cut the foil into roughly car-sized squares, so you don't wind up with a big lump of foil at the bottom. I formed a bunch of cars for my 3-year-old since getting the shape right was a little too difficult for him. My 6-year-old, on the other hand, happily shaped an entire herd of junkers to be crushed by the monster trucks. For my little monster truck fans, this was a great activity to provide some happy distraction while I got food on the table.