Are you familiar with the Brown Scapular of Our Lady of Mt. Carmel? I ask because you mentioned one of reasons the Jewish tallit interests you is because the mantle of Elijah was one. The Brown Scapular is even better than that - its the mantle of Our Lady herself and has a strong connection to the Prophet Elijah:
The most Blessed Virgin Mary appeared to St. Simon Stock, the superior general of the Carmelite Order, on the 16th of July, 1251. She held a Scapular in her hand and spoke thus:
“Take this Scapular, my dear son. Whosoever dies wearing it shall not suffer eternal fire.” It shall be a sign of salvation, a protection in danger and a pledge of peace.”
The Carmelite order originated in the 12th century on Mount Carmel in the Holy Land. According to tradition, Maria made a pilgrimage with the Child Jesus to this mountain. As the Prophet Elias prayed for rain, after a three year drought, a small cloud rose up over the sea which grew ever larger and finally brought the long desired rain. Elias saw therein a sign of the promised Virgin, who was to bring the promised Redeemer. Since that time there were hermits on Mount Carmel, praying for the coming of the Redeemer. For that reason, ever since the beginning, the Carmelite order has been under the special protection of Mary.
The Brown Scapular is highly indulgenced and any priest can invest you with it. It is a treasure of the Catholic Faith, and would have spiritual benefits that surpass the tallit.