The Swirling Stars card trick link doesn't work at the moment. It seems to be the same as the one called Strata Star and Star Spin. I can't refrain from pointing out that if you make one of these you need to be very careful about the amount of contrast because if there is a very dark strip in it, it tends to show up as a swastika! Once I saw that (on a mostly red, light blue and black one that googled up) I couldn't stop seeing it.