"Develop an innovative and effective design for car vent clips that enhances the in-car experience. Consider factors such as ease of installation, durability, and aesthetic appeal. Incorporate features that address common issues like adjustable airflow, long-lasting fragrance delivery, and compatibility with various vent types. Outline the materials, dimensions, and mechanisms involved, emphasizing user-friendliness and practicality. Additionally, propose environmentally friendly considerations in the design and production process."