Hi! Can anyone recommend a good backpack for a 4 year old? We’ve got a long haul flight coming up and a lot of travelling so looking for something to fit her tablet/headphones, and a few pens/colouring things in. But something that isn’t too heavy and will stay on her shoulders. Fully aware we’ll end up carrying it a lot of the time so will get a caribener to attach it to my bag! Thanks!