What do you get for the person who has everything?

It dawned on us recently that there's a birthday coming up in the family this week. (We would have realized it earlier, but it would have involved turning the page on the calendar. We're quick like that.) Without naming names, I'll just say that it's important that we buy this person something, anything, that it would not go unnoticed if we failed to make a gesture. But the problem is that this person doesn't need anything. That is, this person has the means to buy whatever their little heart desires several times over. So, the dilemma we face is, what do you get for the person who has everything? Or, as another family member said, "What the heck do you buy for someone that has so much money they can buy whatever the hell they want anyway?"