I just had one random thing happen to me that's making me joke that faeries got into my yarn.
I'm knitting a hat for my niece using my flat number 5 needles and Lion Brand's Pamela Colonial Blue yarn. I got several rows in, I think like 14 or so, and then I noticed something: my lead yarn was no longer attached to the skein... It honestly looks like it was cut, but it was inside the skein.
Course, this was also bought from the thrift store, so I suppose it was someone else and not the faeries who cut it. Still, I am left with a disconnect. Then again, this gives me a perfect chance to practice my joining technique.