1 The countdown to Christmas is an exciting time for children. Using a countdown calendar is a way to increase holiday expectations. This Advent Calendar is a magical Christmas gift, with new surprises every day! 2 This Advent Calendar toy is made of high-quality, safe and non-toxic materials, suitable for adults and children over 3 years old. Includes rough and polished rock samples. A great gift for girls and boys! 3 The toy advent calendar is a fun way to allow children to count down to Christmas every day and get some surprises every day. Can cultivate the patience of children. 4 This toy can keep your child away from electronic products and reduce stress. You can also practice numbers and counting skills with your child! This will stimulate your child's curiosity. 5 This is an ideal Christmas gift for children over 3 years old. A great scientific gift for mineralogy and geology lovers.