Reply to "collective nouns?"

Name a collective noun that is composed of inanimate things.

Izzy, with your permission, I would like to resurrect this topic to clarify something on collective nouns.

Rachel, what about these? Are they not collective nouns?

A punnet of strawberries,
A clutch of eggs,
A string of pearls,
A bunch of grapes, etc, etc.

Thank you.