Paint the inside of the container in deep blue and black tones, blending lightly for a space effect.
Paint all foam balls as planets, letting them dry fully before handling.
Attach planets to wires or skewers and position them inside the container at varied heights.
Wrap LED string lights around the interior supports, spacing lights evenly between planets.
Glue figurines in place, add labels, then secure the Sun at the bottom as the focal point.