It's a tall order- and not one Santa could fill for every child. Yet in order to prove to little Natalie (and her similarly level-headed Mom Maureen O'Hara) that Santa is real, and so much of life's meaning is derived from those wonderful "intangibles," Santa makes good and delivers a house.
A house is huge and a great gift, right? Then why is the house not #1 on the countdown? Well, because the house (while being the exact one asked for) was only for sale, and it was up to Mom and new Daddy to foot the bill- and in this economy! It's a great gift, but like the cars won by Oprah's studio audience, it was a gift with a few strings attached.