Paint the cardboard box blue and add a yellow Sun design on the front; let it dry fully.
Draw and cut out circular planets from cardstock, keeping sizes slightly varied for realism.
Color each planet and outline details using a black marker then glue or tape each planet to the top of a skewer or craft stick.
Label sticks with planet names using small paper strips.
Poke holes into the box top and insert the sticks, spacing planets evenly from the Sun.