Shaykh al-Albaani (may Allaah have mercy on him) said:
This misguidance is still widespread among the Bedouin, fellahin (peasants) and some of the city-dwellers. Examples include the pearls which some drivers put in their cars, hanging them from the rear-view mirror. Some of them hang an old shoe on the front or back of the car; some hang a horse-shoe on the front of their house or shop. All of that is to ward off the evil eye, or so they claim. And there are other things which are widespread because of ignorance of Tawheed and the things which nullify it such as actions of shirk and idolatry which the Messengers were only sent and the Books were only revealed to put an end to. It is to Allaah that we complain of the ignorance of Muslims nowadays, and their being far away from their religion.
(Silsilat al-Ahaadeeth al-Saheehah, 1/890, 492)