S.J.
I would not get her the toy. I stopped doing the "getting them what they ask for even though I know they won't play with it" years ago. I have the kids make quite a long list and then I can pick from what they list, thereby eliminating the issue of REALLY wanting just one or two things.
Now, if she really gets disappointed on Christmas morning you could
(a) always get it for the next holiday (if coming up soon) or
(b) give her a gift card to the store where it is located (she may change her mind and end up getting something else that way) or,
(c) make her do chores and you give her money to buy it. Lots of helping mom set the table for fifty buckaroos!!
I guess I would also ask, why do you think she won't play with it? If you provide a reason, I could better provide a solution. In other words, have to gotten similar things like this in the past? It doesn't sound like that is the case, as this is a "strange" toy according to you.
Good luck!