As electronics hobbyist you probably are busy with more serious projects than this one. Sometimes doing little fun projects are worth a time especially if it’s done with kids. This project actually is pretty simple LED effects circuit based on ATtiny2313 microcontroller that is able to drive 24 LEDs with dynamic indication. As you may know driving all LEDs constantly at once may be crucial to microcontroller.
Whole project is assembled on a prototype PCB board – so there is a minimal time spent on assembly. The next step is more fun as it takes a programming effects and controlling them. There is more than one effect programmed in microcontroller that can be changed with one of three buttons, whilst other two buttons are for increasing or decreasing effect speed. So this is great project for eve.