Lots of big companies and government agencies have worked with creativity consultants and trainers in creative thinking
techniques. I'm not aware of any such interest on the part of activists, community organizing groups, and environmentalists.
Perhaps their knowledge and skill can be put to good use in promoting sustainable development?
Expect to pay $400 plus per person for training and more per day of consulting. Expect to spend time finding qualified
trainers and consultants. This is an area where you need to screen consultants and trainers with more than the usual care.
Look for some help in this area, on this page. Not sure when I can get things together and posted though.