Yes, there is such a thing, and here is some:
I bought it last week at Williamsburg. It is from a sheep named Meathead (because no one likes him and everyone says he is mean and a pain to work with), and it was hand-spun and hand-dyed---with indigo---on premises. Meathead is a Leicester Long Wool sheep, which means that the fibers are long and spin up nicely into a strong yarn.
Now there is a rule about souvenir yarn (I just created it) and that is:
*It doesn't have to be bought with any project in mind. It's a souvenir. It might never be made into anything. It might just be admired.
So proclaims Knittergran.