Here is a kindness advent calendar that I use in my class. It is a nice way for children to open something each day and has a task to achieve behind each door. I have edited it to match the days that the children are in school during December, so that it doesn’t become complicated. I usually invite 2 children a day to open the door and complete the task so that everyone is involved.

I hope you enjoy your class spreading a little bit of kindness each day!