I'm a believer in the Clipchart management system. It's worked wonders in my classroom. I put my own touches to it with the use of buttons. I purchased painted clothespins and then hot glued cute little ol' buttons to them. I then numbered the inside of each pin and at the beginning of each year, I let each kiddo select the button clothespin they want. This allows for more privacy since clothespins are not identified with names, only buttons and numbers. I made a "Button Up Sign" and signal cards to hand out when needed saying, "You get to button up" or "Please button down". I use the signal cards when I want to discretely let students know to move up or down. I keep a laminated supply of them handy on my front table.