We tell our story in a (hopefully) entertaining way that matches the theme of our essay.
In 2011 (the first year we received an RCA), our theme was the "puzzle" of our team and how all the pieces go together. Our prop for the presentation was a puzzle with the pieces prepresenting different parts of our team and ultimately combining to create our logo.
Last year, our theme was superheroes and comics. Our judges reports were small comic books (not actual drawn but photos with filters applies and designed to look like a comic book, complete will "ads" from our sponsors
). The presentation was more of a skit while telling the story, with 2 students acting as superheroes and one as a villain who didn't think our team could have any impact on anyone. Our prop was a giant "comic book", refurbished from a giant cardboard book we made in 200...9? for a storybook theme.