Sometimes things just appear in unexpected places, like these spools of grey wool I found in an antique store among furniture and other non-knitting items. Each of these holds more than 100 grams cobweb weight wool.
The large black spool is not antique, but definitely vintage and acquired from someone's old stash. There is more than a kilo of cobweb wool on it!
No time to be bored in the foreseeable future - all of that should be enough for at least thirteen shawls.