General:
* Pack: A group of things tied or wrapped together.
* Group: A collection of items or people.
* Set: A collection of related things.
* Batch: A quantity of something produced or gathered at one time.
* Pile: A heap of something.
Specific:
* Sheaf: A bundle of grain.
* Fascicle: A small bundle of papers or documents.
* Quiver: A case for holding arrows.
* Spool: A cylindrical device for holding thread.
* Roll: A length of material wrapped around itself.
Figurative:
* Cluster: A close group of things.
* Constellation: A group of stars.
* Mass: A large quantity of something.
Please provide more context about the bundle, and I can give you a more specific suggestion!