Thank you all for your replies. As much as I would like to visit the Holy Land, at the moment, this is not possible - although it is one of my aims to go there one day. For now, I’ll try contacting the Franciscan Friars - maybe they know how I can obtain one of these relics.
Nevertheless, one day I do want to visit the Holy Sites in Israel and Palestine so that I can pray at the places of our Lord’s Passion, as well as the places associated with His life.
May God bless you all and may Our Lady of Europe pray for us!
-Gib1704