Small french gift to give to a class (relevant to the philosopher Jean paul sartre)?

I have to do a project on a French philosopher named Jean Paul Sartre. We have to give basic information, theories, dress up like him, prepare a dish that is relevant to him ( chocolate mousse ), and have a gift for each of my classmates. I have no idea what my teacher meant by a gift, but one of my classmates is making play doh shapes. Any ideas?|||Perhaps you could wear a hat. I think he wore one.