We tend to lose sight of the big picture aspects of the classroom environment that impact the atmosphere and community. One of the most powerful classroom management tools is good instruction. If students are given the opportunity to collaborate, move around, create, and engage with each other, they're less likely to misbehave. The more invested they are in what they're doing, the busier they are, and the less likely they are to get sidetracked. If the teacher is constantly moving around, working with students and engaging with their learning, they're more likely to stay on task. Use pair-shares, fishbowl circles, table teams and other methods of creating engaging (and collaborative) lessons, offering students an opportunity to share what they know and feel accomplished.
Here is a great list of activities to increase student engagement to inspire you: https://www.readinghorizons.com/blog/14-classroom-activities-that-increase-student-engagement