Mechanical drawing toys are creative tools that allow children and adults to create intricate designs and patterns. These toys often use gears, levers, and other mechanical components to produce drawings automatically as the user turns a handle or pushes a button. They can help develop fine motor skills and an understanding of basic engineering principles. Many mechanical drawing toys, like the Spirograph, use a series of rotating disks and pens to create beautiful geometric shapes. These toys encourage creativity and can be used for educational purposes, making them popular in both homes and classrooms.