Eg kitchen utensils wife kept in safe (6)
I believe the answer is:
pewter
'eg kitchen utensils' is the definition.
(items made of pewter)
'wife kept in safe' is the wordplay.
'wife' becomes 'w' (abbreviation).
'kept in' means one lot of letters goes inside another.
'safe' becomes 'peter' (I've seen this before).
'w' put inside 'peter' is 'PEWTER'.
(Other definitions for pewter that I've seen before include "Alloy used for utensils" , "Alloy of tin and lead, often in beer mug" , "Bluish-grey alloy" , "Plate" , "Alloy of tin with copper and antimony" .)