Dictionary as creative tools

I might be something needless to say, but dictionaries are sometimes useful to expand your ideas.

I usually use two types of dictionaries for idea generation: collocations dictionary and Thesaurus.

Oxford Collocation Dictionary
http://llohe-ocd.appspot.com/

Visual Thesaurus
http://www.visualthesaurus.com/landing/?ad=cdo&utm_medium=default&utm_campaign=VT&utm_source=cdo&word=great
This thesaurus shows the cluster of synonyms and some of the antonyms, which might make you fun through just seeing it.