Personally I wouldn't make out presents to be from Santa. I wouldn't give them the belief that there is a Santa, or that he is real.
As soon as they were old enough to understand I'd explain that it is just a lie which seems to make Santa seem like someone who has favourites with the most expensive toys while others are stuck with little - and that they can feel free to tell all the children at their school that Santa is actually their parents.
I don't really want kids, though.