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.
A letter to first-year teachers "[G]ive yourself at least three more days than you think you'll need for each unit to account for fire drills, snowdays, and hangovers." Sound, sarcastic, and humorous advice for outlining the school year.
Setting the Tone in the First 10 Minutes of the First Day of School (Who's Who and Who's New)