I have 3 DCs. They were all given premium bonds when they were born by grandparents which I hold in trust until they're 18.
One of them has won quite a bit of money (to us). Not a life changing amount, but it would probably be a good heft of a deposit on a house.
Do we split into 3, and do the same if the other 2 ever won anything? And where do we put it? A lovely problem to have but I'm ever so slightly in shock.