They'd be your children, and he could also conjure a wife/husband/life partner/goat if you need one.
Would you be happy to have kids right now? I decided a couple of minutes ago that I would. A boy and a girl.
I think this broody feeling has been brought on by a blurb about the Cadbury's easter egg trail in assocation with the National Trust on my easter egg box. I was like "Wow that would be fun" but then it said "Bring the family" and I felt a little sad.