how to top up kids accounts

hi guys
im hoping to get UC outbound rewards coupled with PE inbound for next years flight .. I have my PE upgrades via VA card but I think I may need to top up the boys accounts by 10000 or so miles for the UC reward .. anyone any idea best way to do this ?
my account is filling up nicely thanks to my CC spends but just cant think how I can top their up ... was thinking possibly CC points but im going to need a few of them ;)
any other ideas ?
Lisa x

are they to young for Virgin Money ISAs?

hi thanks yeah I had thought of that but they are only 13 so to young
Lisa x

I hadn't realised children could join the Flying Club but I looked it up and it's age 12.

Tesco Clubcard normally a good way to top up the miles especially if they've got an offer on.

I think the issue you have is a lot of the usual miles earning methods aren't available to children and transfers from outside sources need the names to match so you are basically down to buying / gifting / transferring from your account to theirs and that will involve some costs so log into your FC account and see the difference in costs of doing that.

Depending on how many miles you all have you could consider a split booking where if they have enough miles for one sector you book that via their about and the return via your account - this is not the same as transferring miles and can leave your face accounts out of kilter but it's something to consider