Collectively, there are several hundred techniques
published in books by Michael Michalko, Andy Van Gundy,
James Higgins, Dilip Mukerjea and others. Techniques are
like tools in a workshop, with different tools for
different parts of the creative process. For example,
there are techniques for defining a problem, exploring
attributes of a problem, generating alternatives, visual
explorations, metaphors, analogies, and evaluating and
implementing ideas. This site lists and describes about
30 of the most popular techniques.