In my Harry Potter themed classroom, I needed a place to put the phone-holder. I take attendance by this and it has helped SO MUCH with keeping my students off of their phones in class. They called it "phone jail" so when I decided on the HP theme, what could be better than a bulletin board of Azkaban?
I appreciate this behavior management tool in a classroom. When a student abuses their freedom to have a phone then it is put into the phone prison. I think this is a great reinforcement tool to negate bad behavior as Skinner detailed in his radical behaviorism theory.