Wordle is a cool online application for making word clouds.
Visuwords is amazing online visual thesaurus; plus it's fairly interactive.
Weboword, another online resources, includes drawings that illustrate the meanings of words.
If you're looking for an online visual dictionary (and let's face it...who isn't?) try this.
Think of these vocabulary resources as a bit of frontloading for April, National Poetry Month, which will be recognized, perhaps even celebrated, here with a variety of poetry related posts.