Bring back badge for each child (6)
I believe the answer is:
nipper
'child' is the definition.
('nipper' can be a synonym of 'child')
'bring back badge for each' is the wordplay.
'bring back' is a reversal indicator.
'badge' becomes 'pin' (I've seen this before).
'for each' becomes 'per' (I've seen this before).
'pin' backwards is 'nip'.
'nip'+'per'='NIPPER'
(Other definitions for nipper that I've seen before include "Kid - claw" , "Small boy (old slang)" , "Informal young child or lobster claw" , "Large claw of a crab" , "Young child or lobster's claw" .)