Present ideas for 9 year old girl

[Candycough]

Hello,

Would be grateful for any present ideas for a 9 year old girl. Budget of around £15. The party is on Sunday so I don't have too long, so it probably needs to be something I can get from local shops rather than ordering online.

Slime kits are about the £15 mark. I've seen some in WHSmith and Argos is bound to have loads in stock.
Nail art is popular with a lot of girls this age. Claire's have scented, holographic and glow in the dark nail varnishes, as well as nail stickers and gems...
Stationery is always a good one. Scented gel pens and erasers are pretty failsafe presents.
Bath bombs from Lush are also popular.

Squishy off Amazon would go down a storm!