To keep my students focused on the day's objective, I tell them what their 'exit ticket' will be for each day. I stand at the door as the students leave and they tell me an interesting simile, a new vocabulary definition, information from the Internet, etc. Students may not give the same answer as a student who has already exited. Students stand in line and discuss ideas. It only takes a couple of minutes, provides an orderly exit, is a good review, and increases time on task. The practice also gives me a quick check of learning. Students are actually disappointed when we don't have time to do this!