This might seem elementary.but I love the quiet spray idea! Very cool teacher ideas on this site. Quiet spray has nothing in the bottle but air. This may be the smartest classroom management tool I have ever seen.
Place the word of the day inside the badge. As the children walk in the classroom have them read your word, when children ask you to tie their shoes or give a push on the swings, have them read the word! WOULD BE GREAT FOR SPANISH Word of the Day!
Make and put on the door - Teach-A-Roo: Ticket Out the Door! This can be used as an exit ticket. You could put critical thinking or math on the door. This gives the students something to do when waiting at the door.