Scrounge from, to get something for the bathroom (6)

I believe the answer is:

sponge

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'scrounge' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for sponge that I've seen before include "No pegs on this substance to soak up" , "Wipe" , "Light cake; sea creature" , "that lives in the sea" , "Soft, absorbent material used for washing" .)

I've seen this clue in the Evening Standard.

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