I looked up xmas ornaments cute made outf soda cans...I have a big round clock we paid like 900 for it,go to some antique shows.

What if you got a ceiling lamp with a big barrel shade and put a coke themed picture on it, like on this desk lamp. (see link below) There are also places that tell you how to make your own ceiling lamps that you could then add the coke theme to, such as by cutting the bottom off a coke bottle and having that be the "stem" of the lamp that comes down from the ceiling.
Goo d luck. I hope you post a pic when you have done it.
Kathy

Here is a link that might be useful: Coca cola desk lamp