Adding visual elements (such as pictures, maps, or charts) can really enhance your speech. Make sure to always pay attention to copyright restrictions and give credit to the source for all images you use.
Prezi is a virtual whiteboard that transforms presentations from monologues into conversations: enabling people to see, understand, and remember ideas.
Search Google for pictures, maps, or other visuals to supplement your speech. Tip: You can also try an Advanced Google Image Search. By selecting "Labled for Reuse" in the Usage Rights drop-down box, you'll ensure the images you use are not violating copyright licenses.
Wordle is a free site that lets you input text (such as President Obama's acceptance speech, seen below) and generate a "word cloud." Words appearing more frequently receive greater prominence in the cloud.
This Creative Commons photo courtesy of http://www.flickr.com/photos/52473526@N00/3004046717/