I guess the equivalent would be a physical catalog. Instead of browsing a museum's collections online, people could thumb through it like a photo album but with captions and pictures of artifacts. Of course this still is putting 3D objects into a 2D medium, which makes them less interesting and less useful. Plus it would be massively expensive to print catalogs and send them to everyone. Maybe a more practical option would be to make print catalogs for circulation among the public, either by neighborhood groups or libraries or schools or any organization which can be convinced to participate.