This week's topic is: Invent your own mythological creature!
They live in libraries and wear clothing made out of the pages of books no one checks out.
They have ears like a kitten's that can hear sounds from all the way over in the Children's Section, warning them to hide deep in Reference.
They grow extremely tall and thin, but when they get spotted by a patron, they sink down into a shapeless blob and secrete scented mucus that tricks the patron into thinking that the creatures are merely napping homeless people.
They don't talk, but do occasionally make shushing noises.
They salt the library steps in the snowy seasons and spit on cars that stay in the drop-off spots too long.
Most libraries only have one, though large, downtown locations might have two.
The creatures appear when a library is born and die when it is closed.
If you've ever walked into a library and found the exact right book sitting in front of you at the exact right time, that was the creatures' doing. Don't worry about thanking them. They're only doing their job.
Librarians know about them, but they won't tell.
I call them: Bibliosaurs