I'm a single, young adult woman. My extended family members have been asking me lately what I want for Christmas this year - they genuinely want ideas as we are a gift-giving family. The problem is, I can't think of anything specific at this time! So I have been saying a lot of "I don't know" or "Whatever you want to get will be great", etc.
Lately it has occurred to me that, based on the rising popularity of a certain technology item, and my known interests and the fact that I don't have one, that my father may likely get it for me for Christmas. And I strongly do not want one at all.
It's not something I find violates my personal ethics or beliefs (like meat for a vegan), but it's an expensive present that I actively want NOT to own. So I would hate to be gifted this, because it is expensive and would be a waste of their money, and then I'd have to use it so they don't feel bad, which I don't want to do!
So that is a long story by way of saying.....is it rude, when asked what I want for Christmas, to say something like, "I can't think of anything specific, but I really don't want X"? Or maybe I should think of something to say like, "A new sweater would be great. In case you are thinking of it, I really am not interested in owning X"?
For some reason that I can't shake, it just feels rude to me to say this. It's not that I'm fishing for gifts -- these relatives are asking me what I want -- but it feels much ruder on some level to tell people in advance what you DON'T want, rather than telling them what you do.

Any ideas on if this rude, and if so, what should I do? (right now I plan to just do nothing and say nothing and if I get the unwanted gift, act happy and use it a little bit for show).