Overplayed souvenir: Miniature Colosseum
The mini-trinket was probably invented in Rome, right around the time the Empire collapsed.
Get this instead: A Vespa. JK! An olive wood spaghetti spoon or gnocchi paddle
Obviously, food -- olive oil, wine, pasta, Biscotti -- is a natural move here, but why not go with the utensils instead. Or, you know, one of those Eyes-Wide-Shut masks. Again, kidding. Maybe?