A simple toy for creating geometric drawings or a complicated tool for understanding complex mathematical formulas? Either way, Spirograph has entertained and educated kids of all ages for 60 years. Spirograph was first packaged as a set of gears, rings, triangles, and straight bars. By placing a pen point into one hole of a gear and rotating it around the other gear—or inside another—users could create intricately patterned geometric drawings. Art or math, play or educational tool, Spirograph is a formula for fun.