I remember the PT boats. I also had this weird thing from Frosted Flakes: it was about 2 inches long, shaped like a football with ridges running the long way and made out of some slightly sticky rubbery substance. You threw it against a wall or window, and it would "walk" down to the bottom. It worked until it gathered enough dust to make it unsticky.

Little Hawk- considering the prize, we all come out winners if we don't take you up on your idea.