Christmas- box fillers???

[whattodo2019]

I'm thinking of buying my nieces and god daughters one of these boxes each for Christmas with their name on.
What can I fill them with? The boxes cost £22 each and ideally I don't want to spend more than £3 on the fillers.
The girls are aged 10-13
The 13 is vegan and coeliac

Please inspire me!!!

Elodie2019 the OP didn't ask for people's thoughts on the actual boxes, just asked for ideas on what to put inside.

I can read!
If the OP didn't want people to comment on the box, just ask for general ideas for box fillers.
No need for a picture of the box, or its price.
I think someone has already identified the 'seller' of said boxes.
Bit of crafty MN advertising if ever I saw.

I am honestly not the seller if these boxes, please believe me. I screen shot the boxes as I thought they were lovely..
Some if you guys are so unnecessarily cruel.

Next time no price or photo .....