11 year old girl's presents

[SnowmanDaveIsVeryFestive]

I need a small gift for an 11 year old girl that I don't know. Its the daughter of my second cousin and her mother buys for my very recently born kids, so I feel the need to reciprocate. I have no idea what to get her. It would need to be posted. Any ideas? I'm looking to spend around £10.
Thanks

Id send a gift voucher. I know it seems a bit impersonal, but you cant go wrong with say a New Look voucher for £10 and she can pick out a top or something she likes, its also easy to post.

Claire's Accessories voucher.

Like both of those ideas. Yes, I think a voucher would be the way to go. Thank you.