I don't know if your kiddos are like mine but, during my second year of teaching, I had a group of about 10 kiddos who were always late to my class and be disruptive as they entered. In order to combat this, I created The Tardy Ticket! If a student was had an unexcused tardy, they needed to complete this ticket to enter the classroom. The instructions are simple; on each ticket there is a set of 3 SAT vocabulary words. The students need only to whip out their phones (or you may want to provide a dictionary) and write down the definition. No ticket=no entry. Purchase comes with 20 different tickets! That's a total of 60 words!