Mainly in that you can customize the pattern. As far as I know the fridge magnets are a series of N/S stripes that are made by driving a long coil with AC and r

Mainly in that you can customize the pattern. As far as I know the fridge magnets are a series of N/S stripes that are made by driving a long coil with AC and running the film past it at a speed tied to the mains frequency.