Stuff Romeo found in small briefs, perhaps (8)
I believe the answer is:
sundries
'stuff' is the definition.
('sundries' can be a synonym of 'stuff')
'romeo found in small briefs perhaps' is the wordplay.
'romeo' becomes 'r' (phonetic alphabet: alpha, bravo, charlie etc.).
'found in' means one lot of letters goes inside another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'briefs perhaps' becomes 'undies' (British slang for underwear).
's'+'undies'='sundies'
'r' going inside 'sundies' is 'SUNDRIES'.
(Other definitions for sundries that I've seen before include "Miscellaneous unspecified things" , "Various small items" , "Odds and ends" , "Miscellaneous objects, incidentals" , "Extras" .)