Busybox is a special tool that helps tiny computers do lots of different things! Think of it like a big tool box with lots of different tools like hammers, screwdrivers, and wrenches inside.
But instead of real tools, Busybox has tiny computer programs inside that can do things like copy files, connect to the internet, and create folders. These tiny programs are easy for busybox to store and use, so it saves a lot of space on the computer.
So, when someone wants to use their tiny computer to do something like connect to WiFi, the computer can use busybox to find the right tiny program for the job. And since it's so small, it can do lots of different things without taking up too much space on the computer.