Create a conceptual vision board collage for the year 2024. The collage should include symbolic representations of positivity, empowerment, technology innovation, environmental sustainability, and personal growth. Incorporate images related to these themes, like a glowing sun for positivity, a strong tree for personal growth, a high-tech gadget for technology innovation, and a green leaf for environmental sustainability. Set all these elements against a background composed of calendar pages marked with '2024'.