Reverse the problem brainstorming method
Question # 1 What is a problem you have?
Example
People throw trash in the streets.
Question # 2 How can you make that problem much worse?
3 examples of making the problem worse: 1. Remove all disposal and recycling containers in the streets. 2. Throw all trash you have in the streets. 3. Stop educating children about disposal and recycling.
Question # 3 What is the best idea for making the problem much worse?
Criteria to use when selecting the best idea to make the problem worse:
The idea is highly unattractive for as many citizens as possible.
Question # 4 What is the opposite?
Examples of ideas:  Increase the number of disposal and recycling locations for all kinds of products.  Educate children more about recycling.
Examples of sources http://creatingminds.org/tools/reverse_brainstorming.htm http://www.designorate.com/design-thinking-tools-reverse-brainstorming http://www.destination-innovation.com/articles/brainstorming-techniques-nominal-method-and-reverse-the-problem http://dux.typepad.com/dux/2011/01/this-is-the-fourth-in-a-series-of-100-short-articles-about-ux-design-andevaluation-methods-todays-method-is-called-rever.html http://www.freespirit.com/files/other/Diff-for-Gifted-Learners21.pdf http://www.halogensoftware.com/blog/how-to-solve-problems-with-reverse-brainstorming http://www.mindtools.com/pages/article/newCT_96.htm http://www.startupcabin.com/blog/reverse-brainstorming http://www.washington.edu/research/rapid/resources/toolsTemplates/reverse_brainstorming.pdf