Prezi templates are designed to show relationships within a topic.  For example, I recently used the template below to present the differences between the simple present and the present progressive.  I love the two animals fighting and think it appropriately represents the difficulty students often have when deciding which verb tense to use.
 
This week in grammar class (CORE: LEVEL 4), we're using adjectives and adverbs.  In order to distinguish between -ed & -ing participials (excited VS exciting), I had students take pictures of themselves representing both participials of the same base word.  Check out the slideshow below to see their pictures and example sentences.  They did a great job!