-regular checkins -coaches/mentors -make sure that everyone participates in meetings/dev huddles. Often toxic environments stem from just a few individuals who are louder than everyone else. No one else is ever heard and doesn't feel like part of the team. -make sure people feel empowered to do their job and more. get rid of micromanagers. -management should be open to feedback and act on it.
Feedback is the key ingredient. Make sure employees have a channel to voice their opinions and that it is acted on.
An inclusive work place also points out and immediately acts when teammates do things that are NOT inclusive e.g. racist or sexist jokes. That's a way of showing that you care about your teammates and their work environment.