Crossword Genius

Things found in yachts regularly after back-to-back parties (7)

Ross

I believe the answer is:

doodahs

'things' is the definition.
(doodah can mean any thing or item)

I don't understand how the remainder of the clue works.

(Other definitions for doodahs that I've seen before include "Thingamys" , "things we cannot name" .)

I've seen this clue in The Guardian.
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