Here’s a video I found on YouTube by Mahesh Pendam, an artist in India. He does amazing photo-realistic art and portraiture, so Spirograph must just be a sideline.
If you’re new to Spirograph and are trying to figure out how to make it work, or you just like watching patterns unfold, you’ll enjoy this video. It has been speeded up, so don’t expect your own efforts to go so quickly. Take your time!