I was thinking about collective nouns and came across a web site with a long list of suggestions for various things e.g. A knuckle of gangsters. I thought it might be fun to see if anyone could guess others. Here's five to start (if members play along I'll post more)
An A of walkers (5 letters)
A B of accountants (7 letters)
A C of transvestites (4 letters)
A D-R of turkeys (5 letters-3 letters)
A M of rioters (5 letters)