![Travel Spirograph kit, with blue and red pens](https://aperiodical.com/wp-content/uploads/2021/06/spirograph-edited.jpg)
If you’re the kind of person who’s interested in doodling and/or fun toys, you might have encountered the fun doodling toy Spirograph, or some unbranded equivalent. It sits somewhere on the continuum between an artistic drawing tool and a neat mathematical gadget.