A pretty expensive souvenir shop with some religious items. The bypass-the-line tickets to the Vatican Museums are sold here.

St. Peter's Gallery

Located across the street from the Vatican City wall if you're following it from San Pietro towards the Vatican Museum. Very cheap.

Old Bridge Gelateria

Part of a Rome-based chain, offers good salads and other food to both tourists and locals.

L'Insalata Ricca

Good selection of craft beers, many on tap. If you're a beer lover, it's definitely worth going. Some snacks too, try some Trapizzino (triangular filled pizza).

Be.Re

Quick pasta and pizza restaurant, and portions are large. Very cheap.

Pastasciutta