Communities incorporate sustainability into the Summer Solstice festival by promoting eco-friendly practices such as recycling and using locally sourced materials. Events may include workshops on sustainability, emphasizing the importance of environmental stewardship. Local artisans often sell goods that are eco-friendly, highlighting a commitment to preserving the environment. Additionally, activities like tree planting or clean-up initiatives foster communal responsibility. By prioritizing sustainability, the festival not only celebrates the season but also raises awareness about the ecological challenges faced by communities, encouraging collective action.