A group of diverse individuals gathered in a park, happily trading items such as books, plants, and household goods, with a central theme of sustainability and reducing waste. The scene feels fresh and eco-friendly, surrounded by greenery and bright sunlight. Smooth light, real photography, Fujifilm Superia, full HD, taken on a Canon EOS R5 F1.2 ISO100 35MM --ar 16:9 --s 750.