What is the collective noun of straw?

There isn't a widely recognized collective noun for straw.

However, you could use descriptive phrases like:

* A bale of straw (for a large amount)

* A bundle of straw (for a smaller amount)

* A pile of straw (for a random collection)

You could also use more creative options depending on the context, like:

* A haystack of straw

* A bed of straw

* A blanket of straw

Ultimately, the best option depends on the specific situation and the desired effect.