Apparently there are about 2 billion children in the world and about 35% of them wrote online to Santa Claus to receive a 'personal' reply. Wouldn't it be cool if instead of an e-mail reply some of those (or all of them?) kids could get presents as well in the post? To provide 2 billion children with presents would take an estimated $40 billion (at an average of $20 per gift - toys etc. are expensive, and it might take even more funds than that).
A non-magical Santa would most likely be a multi-billionaire (or trillionaire?); however the task might be accomplished by billions of poor Santas; or maybe even by parents?
For Xmas, I'd like: a personal flying machine (the Martin jetpack).