as far as i'm concerned, unless you're in prison the legal classification of "weapon" shouldn't exist at all. assault and murder are illegal anyway, why should using an inanimate object in the process affect how bad it is, or prevent others from freely using said items for mundane tasks? there's been at least one broken bottle used in every Hollywood barfight(and a few real-life ones), but as far as i'm aware no one's tried to ban glass bottles yet.