Fighting Over a Microphone Toy

Our girls play a lot these days but there are times they would fight over something especially toys. One of the toys they would like to play is the toy microphone, for some reason both girls just want to play it when the other got it in her hand. I was thinking of looking at real microphones and buy each of them so there will be no fighting in this house. That way, they will both indulge themselves in singing and practice.