Two crafts in one box: first cast it, then paint it, then watch it glow. This 4M kit lets kids mix up their own plaster, pour it into six space-themed molds, and pop out fridge magnets and badges ready for a coat of color.

Once the paint dries, the magic kicks in — these little astronauts, rockets, and stars soak up light and glow softly after dark, turning a bedroom door or lunchbox into a mini galaxy.

It's an absorbing rainy-day project that's even better shared with a friend. Includes 6 molds, plaster ingredients, paints, a brush, and instructions.