If you post a picture of the "old" unknown we might find what it is.
I also take souvenirs, alas not from places as fascinating as the Faeroe islands. I give them the name of the people or places where I got them. so I have Floriano that contains a piece of the soul of my friend, it is a periwinkle and a Madame Garbaille
tamaia that I am reproducing inside since 10 years. Once in a while I put some babies outside and they like it enormously. I got her from the Landes in SW France. Plus others.