I have been on a continuous search for software to support what feeble talents I was born with.  Over the years I have bought and discarded an impressive array of gadgets, programs, books and other paraphernalia.  Some of them I've kept.  For what it's worth, here is a set of resources that may help you.  It contains my own favorite tools, and resource pages that I have tracked down on the web that lead to other, interesting areas.  One of these areas covers specialist  tools for encouraging creativity generally, that looks very promising.

Thinking and Creative resource sites

• Brainstorming.co.uk:   Really interesting UK company that sells products and training on brainstorming and creative thinking.  This site has a free web-based run-through on creative thinking techniques, many of which are quite useful, and most of which are new to me.
• The Creativity Web: An excellent site from a group that sprang out of a creative newsgroup on the web.  It's run by Charles Cave (who worryingly terms himself 'caveman' - I suppose he's one of the few so entitled) and contains outstanding information in many subject areas, ranging from Mind mapping (my favorite  - see recommended products) to drawing, and visual thinking.  It also has a great list of creativity software programs all of which are worth exploring.
• The Concept mapping home page:  A useful resource maintained ny Jan Lanzing that covers Concept mapping (visual mapping, which includes Mindmapping) ideas and resources.

Products I use

I'll do more in this area some other time - but for what it's worth, the creativity tool I have settled on after much research, is Mindman.  This is a mindmapping application, very closely based on the work of Tony Buzan.  There are other applications that do mindmapping, but this one fits best with my corporate existence, as well as providing a basis for solving personal problems.  I use it for brainstorming, note-taking, goal setting, 'what ails you' analyses, and recently, even for project management.  In fact it's probably the most useful piece of code I work with right now.  More on this ater.