Being in Minnesota and seeing them around on other vehicles, has anyone run across somebody that makes a cold weather grille cover that would fit an '08 Escape?

I've gotta believe that they would help a hybrid immensely in the winter by keeping more of the heat inside the engine bay so the ICE wouldn't need to stay on as often if it's need to be on was for the sole purpose of trying to keep itself warm.

I suppose I could make one up with some quality materials that wouldn't look too bad if I needed to, but I was just wondering if anybody made a commercial accessory version of one.