Collaborative Project

I would want to create a collaborative project that every student involved would feel invested in. Sometimes I feel like collaborative projects can frustrate some people because the more forcful, extroverted artists tend to take charge and the shier artists don't get as much of an input. I think if it were a project that made the student create something completely on their own and then assemble them with the other students work in the end.
I know I talk about photography a lot, but it might be interesting to see each student involved create photographs that are entirely their own and bring them all together in the end to see the final concept. I kind of touched on this idea in my first lesson plan, but it could easily be changed to be a collaborate project since in my lesson it kind of already is. You could scale the lesson down and make it so every school in a district would contribute their work (such as a series of photographs) and display the work at each school. It could be paired down even more to say a few students from each class, or many classes combine their work into this same model.
Digital photography would be a fairly easy collaborative project to display because students work could be shown as a slideshow or displayed digitally without printing on paper. If students did print images then they could still be displayed in each school in the district or in the main hallway if just one school is involved. If photography isn't the medium and say each student did a painting or sculpture each piece could be photographed and displayed digitally just as easily.