Cell phones in shoe organizer with student numbers. They are at the front of the classroom so all have clear view of their phone and can't say that someone "messed" with their phone. They are numbered to indicate which phone belongs to which student. I like this!
"Cell Phone Day Care" a place for students to put their phones so they don't have them at their seats - but doubles as a charging station to encourage them to put them there. Day 1 was successful - hopefully it will keep up and keep distractions out of the classroom!