General:
* Scattered: Describes debris spread out randomly.
* Cluttered: Describes debris that is messy and unorganized.
* Dispersed: Describes debris spread over a wide area.
* Accumulated: Describes debris that has gathered over time.
Specific:
* Wreckage: For debris from a crash or disaster.
* Rubbish: For trash or garbage.
* Shattered: For broken pieces of something.
* Decomposed: For decaying organic debris.
* Floating: For debris that is on the surface of water.
Figurative:
* Ephemeral: For debris that is temporary and fleeting.
* Ghostly: For debris that is haunting or suggestive of past events.
* Forgotten: For debris that has been left behind and ignored.
Ultimately, the best adjective for "debris" depends on the specific situation and what you want to emphasize.