Halloween Cobwebs?

I’m not sure if they arrived just in time for Halloween, but it seems that my kitchen ceiling has recently been decorated by the cobweb fairy. For me, that poses a question… Where in the world do they come from? Surely it’s not from spiders… Or is it? Why are they called “Cob” webs? Do cob spiders make them?

If they do come from cob spiders, thank you! Thank you cob spiders for picking up where I am lacking in the Halloween decoration department! Do you offer free clean-up after the holiday? :)

Thoughts anyone?