I've always thought collective nouns are one area the shadowy guardians of our language let their hair down and have a good time. 'A scurry of squirrels', 'a chattering of starlings', 'an ambush of tigers', 'a sloth of bears', 'a crash of rhinoceros', 'an unkindness of ravens' - someone has been having fun.
And there is nothing - unless the aforementioned guardians are a good deal more vicious and prescriptive than I suppose - to stop us inventing our own.
'A babel of languages.'
'A wince of bullocks.' (or 'A wince of steers' in US English.)
'A boast of braggarts.'
'A bereavement of jelly babies.'
'A cliché of soap operas.'
Would anyone else like to play?