Products included: This Christmas calendar has 24 small openings, each with a polished stone. Children discover a little surprise every dayExciting activity: There are 24 stones of different colors and shapes, allowing your child to open one stone every day to learn and research. They realized that a decrease in the number of door openings meant that Halloween was coming soonNew Year's Event: The Advent Calendar is an excellent toy for children's birthday parties, school prizes, preschool props, teaching aids, parent-child interaction, and gift bags. It can be a Christmas countdown calendar to celebrate the arrival of the New Year.Learning: The Arrival Calendar box is printed with information about minerals to help you understand and identify each mineral in your collection. Children, families, and enthusiasts can all be here. They are also very suitable as decorations for Christmas gardens.Widely used: Collecting is a popular way for children to learn geology, explore the world, and teach them about fossils, rocks, and crystalsThis toy gift is perfect for boys, girls, adults, children, and teenagers.