Sugary, small bonbons (6)
I believe the answer is:
sweets
'bonbons' is the definition.
(I've seen this in another clue)
'sugary small' is the wordplay.
'sugary' becomes 'sweet' (associated in meaning).
'small' becomes 's' (abbreviation - e.g. clothes size).
'sweet'+'s'='SWEETS'
(Other definitions for sweets that I've seen before include "Candy, comfits" , "Sugar-based confections" , "puds" , "Children's treats" , "gobstoppers, say" .)