I worked with Dr. Caroline R. Richardson and Prof. Paul Resnick on a fish-tank visualization of group pedometer counts. The goal was to see the influence of group dynamics on people’s response to being diligent about physical activity. The visualization relied on overall degradation of the fish-tank if most people were doing badly but it had room to showcase active and inactive individuals to call out indirect attention to people who were bringing the whole fish tank down.
You can see a live demo of one of the intermediate version here.