I love stores that have history and are singular in their focus and no one is more "old school" than Sennelier. They sell traditional art supplies and.......art supplies. Nothing digital or new, just the way the same perfect products since 1887. Cezanne shopped here, they actually made custom types of paint for Picasso. Great selection of pencils and notebooks and a must see if on the Left Bank in St Germaine. And how appropriate, across from the Louvre.