Fresh chrome storage.

I have front and rear re-chromed bumpers coming back to me at the first of the year, I will not be putting these on the car right away until I get my paint fixed on the car. So I plan on wrapping these pumpers up and storing them in the rafters of the garage. Question is should I coat them in anything and what should I wrap them in?

Also I will have polished wheel well trim coming back that I will store for the time being as well.