This report includes all of the proposals gathered as part of the Five College Directors’ sustainability initiative, “Blue Sky Brainstorm: Envisioning Sustainability for the Five Colleges and Beyond.” The proposals are arranged in the same order as the March 7, 2012 report, and each idea is linked to a full proposal. The Five College working committee includes Jan Dizard (Amherst College), Sue Darlington (Hampshire College), Tim Farnham (Mount Holyoke College), Joanne Benkley (Smith College), Ezra Small (UMass Amherst), and Beth Hooker (Five Colleges).