Baby's toy could have a snake on it! (6)
I believe the answer is:
rattle
'baby's toy' is the definition.
(I've seen this before)
'could have a snake on it' is the wordplay.
'could have' becomes 'tl' (I can't explain this - if you can you should believe this answer much more).
'a snake' becomes 'rat' (rat snake is a kind of snake).
'on' is a charade indicator (letters next to each other).
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
'tl' after 'rat' is 'rattl'.
'rattl'+'e'='RATTLE'
Can you help me to learn more?
(Other definitions for rattle that I've seen before include "Make someone nervous or anxious" , "Clatter or bang" , "Disconcert - conductor, Simon" , "Let rat make the sound" , "Noisy type of snake" .)