The most common and most likely answer to this crossword clue is the 7 letter word RATTLES
I've seen this crossword clue in The Guardian
R
A
T
T
L
E
S
Buddy explains!
The straight part
We know that "baby’s toys" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case baby’s toys = rattles.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RATTLES mean?
RATTLES noun- A sound made by loose objects shaking or vibrating against one another.
- A baby’s toy designed to make sound when shaken, usually containing loose grains or pellets in a hollow container.
- A device that makes a rattling sound such as put on an animal so its location can be heard.
- A musical instrument that makes a rattling sound.
- Noisy, rapid talk.
- Trivial chatter; gossip.
- A noisy, senseless talker; a jabberer.
- A scolding; a sharp rebuke.
- Any organ of an animal having a structure adapted to produce a rattling sound.
- The noise produced in the throat by air passing through mucus which the lungs struggle to clear.
- The noise in the throat produced by the air in passing through mucus which the lungs are unable to expel - sometimes occurs as a person nears death; death rattle.
- Any plant of the genus Rhinanthus, whose seeds produce a rattling noise in the wind.
- To create a rattling sound by shaking or striking.
- To scare, startle, unsettle, or unnerve.
- To make a rattling noise; to make noise by or from shaking.
- To assail, annoy, or stun with a ratting noise.
- To scold; to rail at.
- To drive or ride briskly, so as to make a clattering.
- To make a clatter with one's voice; to talk rapidly and idly; often with on or away.
- A former Middle Eastern and North African unit of dry weight, usually between 1–5 pounds (0.5–2.5 kg).