Animated Automata Greeting Cards with Sound

For some time now, many greeting cards have featured a small electronic sound device that is triggered when the card recipient opens the card. Greeting card maker Hallmark has introduced a new line of greeting cards that also incorporate motion. Their motion-related cards come in two forms. The motion-only variety feature a small finger-crank on the lower right face of the card that, when rotated, sets the design on the face of the card in motion. Hallmark has also introduced a few larger-form