The “EKOStreet Olecko” project aimed to increase environmental awareness among young people and to develop their social skills through active participation in non-formal education activities. The project responded to the need to involve young people more in environmental actions and to strengthen their sense of responsibility for the environment. The main goal of the project was to show participants that their everyday choices have an impact on the environment and to present the practical side of ecology. The project focused on learning through action, experience, and cooperation instead of only theory. Participants learned through workshops, outdoor activities, and working together with others. Another important goal was to develop social skills such as teamwork, communication, organizing activities, and making decisions. Young people were involved in different stages of the project, which helped them feel more confident and responsible. The project also included young people with fewer opportunities, such as those at risk of social exclusion and those with a migrant background. Thanks to streetworking and non-formal education methods, it was possible to reach young people who usually do not take part in similar projects and give them a chance to develop and integrate. A key part of the project was practical environmental education. Participants learned about ecosystems, forests, pollinators, climate migration, plants (including herbs), and the problem of plastic use. They used this knowledge in practice by building insect houses, birdhouses, and taking part in local environmental actions. The project also showed how contact with nature can improve mental health and well-being. Another goal was to develop creativity and organizational skills by creating educational materials such as an online publication, a board game, and a poster. Participants also presented their work during local events and the final conference. In conclusion, the project combined environmental education, social development, and youth inclusion. It helped young people become more aware, active, and responsible, and encouraged them to take action in their communities.