Posted: Sep 15, 2010 2:06 am
Edward deBono has a lot of good thinking excercises, mostly primarily lateral, as opposed to primarily critical, but they might give you some ideas, the five day thinking course, six thinking hats are two, among others, and now that I think of it, I believe DanDare has some qualifications in this area. Six thinking hats is stupid, until you do it and it's fucking aweseome.