For my catch of collective nouns you can go to <www.timjohnstone.net>
(as invited by anu in the most recent weekly letter)
[but see also several parallel threads under Weekly Themes.]
(just making the link clickable)
http://www.timjohnstone.net
Tim:
Very impressive, though I have a couple of additions under prostitutes:
1. A Volume of Trollopes
2. A Flourish of Strumpets
TEd