this hypotrochoid (say that three times!) drawing set includes 2 templates, each with 3 gears and 3 colored pens. hypotrochoids are mathematical curves traced by a point in a circle rolling around the inside of a bigger circle. (sounds like spirograph to me!) anyway, the amount of designs you can create from this set are endless!
$9
from flight 001. (via graphic design bar).
i'm not really getting this online version.
