Door-to-door bus service, with employees (security-checked and bonded!) to watch the children during Mass, take them to the bathroom, etc. Maybe provide lunch, too? Preschool care and baby nursery, so the parents could go out for breakfast unencumbered? Oh, and all of this "free" to the recipients, of course ...
Whoops, sounds like I've just invented a Sunday version of the public school system!
(Not making fun of you, Mach9 - just grabbed your comment for a rant :-).
And an entirely valid rant it is! This has driven me berserk for years--Catholic schools at every level educating children from every religion under the sun--but not in religion while children of practicing Catholics wait their turns for admission.