For the best shopping for food and household items try any Monoprix, located all over Paris. Mine is in the 14th near Montparnasse, but any one will do. A more upmarket Woolworths, it's the only place where you can buy great children's clothes, wine, organic vegetables, cheese, foie gras, notebooks, fresh salmon or tinned tuna as well as pretty lingerie in one stop. They also deliver.