Get them to talk before class starts
Like others, I miss the days when people talked to each other naturally rather than silently staring at their phones/headphones before instruction. I officially made it a class policy last week, only half-jokingly, that students who show up early (which is a good problem) must greet one-two people around them and ask them about their day. I told them that I did not care that it was awkward or uncomfortable, and somewhat guilt-tripped them by telling them that literally every generation of human students going back to Greece and Rome talked with each other, and that at least in my classroom, we aren't going to break that sacred tradition. If they remained quiet, I still instructed them to move next to someone and talk to them. I know someone will critique this and say "what about students with communication issues," and I understand that concern. I have high functioning autism myself, and went through extensive therapy as a child to learn how to communicate. Nevertheless, I don't think anyone will feel "targeted" as I am not grading, and i'm not policing the content of what they are saying. I told them that "silence is for cathedrals, not class." I'm hoping this helps long term. I'm not sure it will, but it's a hill I want to die on :p