What should I do for my project?

Hello everybody. My friend and I have a project that was igned today during our sixth period Life Skills cl. Now our project is about Interpreters/Translators. We have figured out that we will put information on a three fold poster board. We also have cards that will have what we need to say in front of our fellow cl mates. Oh, and we also have thought to take two plain t-shirts and draw out a French flag on one and a Croatian flag on the other, to show which languages we will be using (as well as English to translate to the cl). This is what we are going to do for the presentation (visually) and my friend will say a sentence in French and I will have to translate it into English, and the same way with her, but I will say something in Croatian. Now we wanted a finishing touch on our project, but we do not have any other ideas. Does anyone have a idea that would be great for us to use? Something that will leave the teacher in awe? If you do know, please tell me. Thank you for all of your help. :)