Classroom B-day idea. or just a great community builder mid-year. This is seriously one of the sweetest ideas. If there is no smartboard in your room maybe you could do it with large bulletin board paper. Then they could keep the kind words.
To support Carol Dweck's Growth Mindset, employ the concept of The Learning Pit into the classroom. The challenge concept is set. Through investigation some students begin to emerge out of the pit. They work to help each other
Garden of Goodness: Giving Compliments Spring Flower Writing Activity