Set of nine large solar system bath bombs. $16.90. Available from Amazon.com

This set of nine solar system bath bombs is designed to entice children’s curiosity and make bath time fun. Just drop a planet bath fizzer into a tubful of water and enjoy the magical color and fragrance. These bath bombs are safe and made of natural ingredients. The set comes with space information cards, educational tools to set the spark to the journey into deep space, and a scratch-and-sketch notepad for etching the night sky. For toddlers, teens, and adults.