Help with gift ideas for 15yr old girl

[Trudee]

Need help with a 15 almost 16yr old girl who's into k-pop and irish dancing!
Don't usually see this side of the family on the big day itself so have always sent money but this year we're spending xmas with them so are exchanging gifts.
Have asked her parents but they couldn't come up with anything other than a voucher which I'm loathe to give really

I can help with Irish dancing ideas - is she an Irish dancer or does she just have an interest as a spectator (IYSWIM)? what sort of budget did you have in mind?

Ah yea forgot about budget lol. Thinking around £30 cos we'll get a couple of other little bits too.
She competes and does quite well from what I gather