Did you post yet about the intersecting 3D fractal trees?
Your project about them from the 2013 Wolfram Science Summer School was a good example of what happens at the summer school.
Most people don't come with a specific project like this one, but the projects that people do are very concrete and doable like this.
Probably people interesting in applying would like to hear more. (This is a link to my recent post about the school http://community.wolfram.com/groups/-/m/t/415505?p_p_auth=O249tqnh )