Strange chaps have empty trunks for bits and pieces (8)
I believe the answer is:
oddments
'bits and pieces' is the definition.
(I've seen this before)
'strange chaps have empty trunks' is the wordplay.
'strange' becomes 'odd' (I've seen this before).
'chaps' becomes 'men' (chap can mean a man).
'have' is a charade indicator (letters next to each other).
'empty' suggests removing the centre.
'trunks' with its middle taken out is 'ts'.
'odd'+'men'+'ts'='ODDMENTS'
'for' acts as a link.
(Other definitions for oddments that I've seen before include "Assorted leftovers" , "just a few items" , "Bits and bobs" , "Mods tend to don bits and pieces" , "Bits and pieces, isolated garments" .)