Studies some of unused utensils returned (6)
I believe the answer is:
etudes
'studies' is the definition.
(I've seen this in another clue)
'some of unused utensils returned' is the wordplay.
'some of' says the answer is hidden in the clue.
'returned' says the letters should be written in reverse.
'sedute' is hidden in the letters of 'unused utensils'.
'sedute' reversed gives 'ETUDES'.
(Other definitions for etudes that I've seen before include "Musical compositions (French)" , "Short compositions for solo instruments" , "Musical exercises (Fr.)" , "Short pieces for solo instruments to show talent" , "Musical studies" .)