Sorry I can't ever seem to reply in a timely fashion... So much to do and I never feel good...
"I find hairs weaving themselves into towels and other clothing. It's not just like through it once. It's as if it has sewn/ stitched itself into the fabric."
Amelie83 I noticed the same thing happening in my towels and clothing. I think they can continually grow and weave longer and can take on the color of the fabric. Don't ask me HOW they do it, but they are! This photo is from a towel that has a small blue "thread" stitching itself in. This "thread" happens to be a different color than the rest of the towel, or I might not have seen it otherwise.
Close look shows "fungal looking" ends:
Removed from fabric really shows the ends:
Here a "hair" is completely and too neatly surrounded by a "white twisty thread", zoom in and you'll see the same "fungal looking" tips :