Wordle is a toy for generating “word clouds” from text that you provide. The clouds give greater prominence to words that appear more frequently in the source text. You can tweak your clouds with different fonts, layouts, and color schemes
If you like using images checkout Tag Galaxy a cool site that you may find useful to find images. What it does is to pull pictures tagged in Flickr with a certain keyword onto a virtual globe for presentation. I plan on exploring this site soon.