The French traditionally like to leave nothing alone. Food is COOKED, furniture and clothes are DESIGNED, and, of course, trees are CLIPPED.
Saw this lovely chair at Matthieu Richard on the Left Bank (more info below). If you want inspiration for your own design, there are classic and hard to find furniture ideas in every window.
Mid-Century vintage is everywhere in Paris. This shop is typical of what you will see in the windows of small shops. And vintage trumps new in every case.