If you grew up in the 1940's and early 50's you may remember Nabisco Shredded Wheat cereal and the Niagra falls box it came in. For a few years, back in those days, each box contained a wonderful set of prizes!!! between each layer of shredded wheat (if I remember right, it was each layer) was inserted a sheet of balsa wood printed with the profile image of a WW2 fighter plane. You could borrow a razor blade from Dad and cut these out and assemble them. And pretend they actually could fly by throwing them around. In other words they were much like the cheap balsa profile gliders of recent days, but much smaller of course and more interesting as there were a number of different models. If only I had known. I bet these would be worth a pretty penny today if someone had collected them and kept them uncut and in one piece. I never liked the shredded wheat that much, but I'd eat it just to get the model planes.