A MoMA store gift idea for the wine enthusiast in your family could be this wine glass inside a bottle by Claudio Colucci. The carafe is hand blown so that a perfect wine glass is nested inside. Since it's made by hand, each one is totally unique. That and the fact that it comes from the MoMA design store make it perfect secret Santa material.
Maybe it's just me, but I could see this thing turning into a fun holiday party game.