Yes we had the JVC noise reducing earphones for our daughter when she was a toddler and they were great. We had the wireless ones and I would just say to be mindful of the battery life on them as we found it to be very short and it ran out after half an hour on one flight 🙈 So just make sure you take the lead with you to connect to the iPad and that they are compatible with it!

Yes - look for JVC kids headphones or similar - they have noise limitation

Niche question but is it ok for toddlers to wear earphones? We are about to go on a long haul flight and I think being able to give her an ipad with some of her favourite shows might be helpful. Haven't ever thought about whether it would affect her hearing. She is two and a half. Thanks!