iThoughts HD. Visual thinking guides. This presents nine sources of visual thinking guides: Exploratree, Gamestorming, LexIcon, Education Oasis, TeacherVision, Freeology, Education Place and Writing Fun.
Exploratree hosts a set of interactive thinking guides. This is a free web resource where you can use the guides, print them, edit them or make your own. You can share them and work on them in groups. It is aimed at schools and students, but has ideas for thinkers of all ages.