Paperboy has a very cool and friendly atmosphere. You get fresh food and very delicious sandwiches! Perfect shop to have lunch after exploring the neighborhood.
L'Officine Universelle Buly, also known as simply Buly 1803 is a beautiful shop based on the Rue Bonaparte in Paris, it specialises in refined, artisanal beauty products.
It's always good to check out what's happening in Fondation Cartier. They have lots of really good exhibitions of modern art, and the gallery itself is very beautiful. Perfect for seeing works you already know as well as discovering new artists and inspirations.