It's soon DD's 13 and I've nothing for her! I found a pair of trousers that I'm sure she'd love and ordered the smallest possible size but they do not fit her in any shape or form because they're an adult cut. I can't find anything similar for children. At the moment, I'm thinking of keeping them and giving them to her in the hope she'll grow into them at some point and so that she has something to open on her birthday!
She is currently having a big clear out of her room and selling old toys, but this will probably just bring it down to a manageable level. I looked at buying her a musical instrument she plays but it's way too expensive. Not into make-up or jewellery. Doesn't need anything for sport. Says she doesn't want anything.