Magic Copper Balls For Cleaning Vases and Decanters 5 "Just Magic!" Rachel 27 September 2018 After many years I have just purchased my second set of Magic Copper Balls. When you look at something small e.g. flower vase, vinegar bottle, glass decanter, etc., etc. and think, "How do I clean that?" Simple, use Magic Copper Balls. So quick and versatile.