Very different item for baby (7)
I believe the answer is:
soother
'item for baby' is the definition.
'very different' is the wordplay.
'very' becomes 'so' (I've seen this in other clues).
'different' becomes 'other' ('other' can be similar in meaning to 'different').
'so'+'other'='SOOTHER'
(Other definitions for soother that I've seen before include "form of painkiller?" , "One with calming effect" , "pacifier" , "calmer" .)