Your story is very inspiring to me and how close you are to the Lord makes me warm, just imagine what God feels when you pray to Him!
For the blessed and exorcized salt, you can use any salt and ask your priest to bless it and exorcise it. Ask your priest to exorcise the salt with this prayer: Exorcism and Blessing of Salt (necessary for Exorcism of Water)
P: O salt, creature of God, I exorcise you by the living (+) God, by the true (+) God, by the holy (+) God, by the God who ordered you to be poured into the water by Elisha the prophet, so that its life-giving powers might be restored. I exorcise you so that you may become a means of salvation for believers, that you may bring health of soul and body to all who make use of you, and that you may put to flight and drive away from the places where you are sprinkled; every apparition, villainy, turn of devilish deceit, and every unclean spirit; adjured by him who will come to judge the living and the dead and the world by fire.
R: Amen.
P: Let us pray. Almighty and everlasting God, we humbly implore you, in your immeasurable kindness and love, to bless (+) this salt which you created and gave to the use of mankind, so that it may become a source of health for the minds and bodies of all who make use of it. May it rid whatever it touches or sprinkles of all uncleanness, and protect it from every assault of evil spirits. Through Christ our Lord.
R: Amen.
A miraculous medal is a medal based on the apparitions that St. Catherine received. I wear it around my neck with a St Benedict crucifix at all times. I do not know all of the history behind it, so feel free to look it up on google. You can get a free miraculous medal from this link along with a brochure for a miraculous medal novena and a history of the medal:
https://americaneedsfatima.org/forms/WEB120