And don’t even think about bringing American chocolate (Butyric acid).
Trelawney, the only American chocolate that contains Butyric acid is the cheap, mass-produced kind like Hershey's. You can find a lot of really good chocolate in the United States that is produced in small batches and does not have that.
That said, anne, I'm not sure that I would bring even good chocolate, especially since it's so readily available in Europe. Is there anything in your hometown that you might consider bringing? Some small item that is maybe indicative of New York State or Syracuse? Maybe check some local shops for something hand-made that might be unique and beautiful. That's probably what I would do.