This might be of interest (either for endorsement or mythbusting) for you all...
I wear sacramentals myself( An exorcism medal)They are a living prayer and anointing. I believe this comes mostly from scripture. Almost any blessed object. Notice what Paul did with just anointed cloth in this scripture.
11And God wrought special miracles by the hands of Paul:
12So that from his body were brought unto the sick Handkerchiefs or Aprons, and the diseases Departed from them, and the Evil spirits went Out of them.
"One of the most remarkable effects of sacramentals is the virtue to drive away evil spirits whose mysterious and baleful operations affect sometimes the physical activity of man. To combat this occult power the Church has recourse to exorcism and sacramentals."