Galerie Vivienne (not to mention the one where I live of course, the Passage Verdeau, which to me is the most beautiful one LOL!), I found the store of Emilio Robba, a florist that specializes in "permanent botanicals and landscaping environments.". You may dislike the idea of "fake flowers and plants", but not after you've seen the ones of Emilio's! He even uses them to make beautiful scupltures, like this one of a cow that I could not hep but take a photo of. A must visit place, for sure.