Local communities engage with sustainability themes during environmental festivals by promoting awareness and action on environmental issues. These festivals often feature workshops, panel discussions, and displays focusing on topics like recycling, renewable energy, and conservation. Attendees can participate in activities such as tree planting, cleanup campaigns, and sustainable living demonstrations, showcasing practical steps they can take. Local artists and musicians may contribute as well, amplifying messages of ecological harmony through art. Overall, these festivals foster a sense of collective responsibility and inspire participants to adopt environmentally friendly practices.