Flotsam & Jetsam

 flotsam n

1. (Transport / Nautical Terms) wreckage from a ship found floating Compare jetsam [1] lagan

2. useless or discarded objects; odds and ends (esp in the phrase flotsam and jetsam)

3. vagrants

[from Anglo-French floteson, from floter to float]

                                                                  jet·sam n.

1. Cargo or equipment thrown overboard to lighten a ship in distress.

2. Discarded cargo or equipment found washed ashore. See Usage Note at flotsam.

3. Discarded odds and ends.

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[From earlier jetson, alteration of Middle English jetteson, a throwing overboard; see jettison.]

(The Free Dictionary.com)