Pretty narrow question - considering that not all geeks celebrate Christmas.
EDIT: I didn't down vote, just wanted to comment
@rick_2047 - It does not have to be Christmas to give presents, but the question assumes Christmas first, then presents.
@ceejayoz - Answering 'Nothing' would mean you want nothing for Christmas, not that you don't celebrate Christmas.
- Ask HN: Which Apple product do you desire the most?
- Answer: Not all geeks desire an Apple product.