Creating a guest list for a children’s birthday party is perhaps second only in terms of stress and potential expense to a wedding guest list. For infant and primary age children there’s almost a feeling that the whole class needs to be invited, along with their various friends in other classes, plus friends from clubs, family friends, neighbours and so on. It’s easy for the guest list to start at 30 and rise rapidly towards the half century. How do you regain an element of control over the invitations?