14 Paris museums, part of Paris Musées, are now offering high-resolution copies of 100,000 works of art. Thousands of artists are represented, including Picasso, Monet, and Rembrandt. These are free to use and redistribute. Perhaps there is a worthwhile image you could share with your students. Or if you simply love art, it would be worth scrolling through and taking in the imagery.
You can view the collection here:
More information can be found at the link below.