As I personally greet each student at the classroom door, I tell students I am happy to see them and place a small smiley face sticker on them, indicating that they are my students. I found this little greeting and recognition helps break the ice the first day of school. I also have requests for stickers from former students as they pass my door. Perhaps I have started a tradition among my students. This opening day gesture costs less than a dollar and is a good investment for me and my students.