A lot of movies and video games seem to come with cardboard sleeves around the plastic cases. These seem like something to hold additional materials, or maybe as a box for multiple discs (such as a season of a TV show). More often than not I end up with boxes that are just for a single movie in a single case. Maybe they help the movie stand out on a shelf in a store?
What do you think? Do you keep these sleeves? Do you keep your cases at all?