【Education Hot Talk】Environmental Education DIY Christmas Countdown Calendar Adds Atmosphere Make your own Christmas Advent Calendar, which is very popular in recent years. Just glue the toilet paper tube to the cardboard, fill it with your favorite small gifts, and seal it with colored paper. It’s simple, easy to make and environmentally friendly, and teaches children a life experience The concept of environmental protection can also allow them to develop their creativity. Children will receive a small gift every day when they open it, and happily welcome Christmas.