Ahhhhh, Wooly Willy, you are still around and you haven't really changed. A simple magnet and some iron filings, Willy has managed to be be a popular toy since 1955 when he was brought to market by Smethport Specialty Company.
I guess you could say that comic book ads were the direct to consumer television of their time. Strong visuals and apparent high value led many a child to make a purchase, in this case 79 cents for 100 1/16th" x 1/4" square rubber-coated magnets. Looks like fun. Does anyone make these anymore?
Do you remember "Whee-lo, the Magnetic Walking Wheel" or any of its progeny. First manufactured by Maggie Magnetic Inc. in 1953, it featured a magnet in the hub of the wheel that allowed it to move up and down and around a metal rail; propelled by the players movements.