I saw this cute idea at a charter school a while back. The students were assigned to research a famous person, prepare a report and then present their findings to the class. They each made a poster of the person and cut out a circle so they could stick their face through as if they were the character. For example, in the picture above, the student presented as if he was Abraham Lincoln. This works with a regular poster (if the student holds up the poster while they talk) or with a 3-fold presentation board (which stands up on its own).
I’ve also seen this kind of thing done as a “museum,” where all the students are in a large room and as guests walk by, they give their presentation or answer questions as if they were the famous person.