flotsam and jetsam
Discarded odds and ends, as in Most of our things have been moved to the new house, but there's still some flotsam and jetsam to sort. [Mid-1800s]
Destitute, homeless individuals, as in The mayor was concerned about the flotsam and jetsam of the inner city. [Second half of 1900s] Both words originated in 17th-century sailing terminology. Flotsam literally meant "wreckage or cargo that remains afloat after a ship has sunk." Jetsam meant "goods thrown overboard from a ship in danger of sinking in order to give it more buoyancy." Both literal meanings remain current, although the distinction between them is often forgotten.