Well your best bet would to probably ask their parents if there is anything they have been wanting or enjoy,, and is this a girl or boy? I hope that everything will be ok for them 🙂
When is it going to be? Still during the Omer? I was thinking about an iPod with music. Perhaps an iPod touch which is quite versatile and yet is pocket-sized.
you can download audio books from libraires onliine, its pretty simple. and a nice stuff animal is always nice,nothign big,not a neccasiraly a teddy bear,but something that is colorful and nice feeling so she can hold it and be comferted by it.