Make your circuit: power - fork - button - rgb led - buzzer - wire - button - rgb led - wire - button - rgb led - lightwire -
Cut a circular shape out of the cardboard and mount the circuit on the back using tape. Cut a hole and thread the light wire through.
Decorate the cardboard with markers and construction paper. We recommend making "edges" with construction paper to help the thrower score.
Fill a plastic egg with some beads and give the game a shot.