ELI5: Explain Like I'm 5

Spirograph

Okay kiddo, have you ever played with drawing circles? Well, a spirograph toy lets you draw really cool and fancy circles, and even other shapes like flowers and stars!

Here's how it works: you have a big circular piece of plastic called a wheel, and a smaller one called a gear. You put the gear inside the wheel and you have little holes in it. You pick a hole on the gear and put a pen in it. Then you spin the gear inside the wheel, and as it goes around, your pen moves with it and makes shapes that look like they're dancing!

Sometimes you might have more than one gear, or different sizes of gears, and you can swap them around to make different patterns. It's like making your own mini art machine, all with the power of spinning circles! Cool, huh?