Welcome...there are tons of ideas here on the forum.... I finished mine last week, and still need to add some pictures. My advice would be to look on the forum and check out the many threads that show various works or art, and go from there. You are only limited to your imagination, budget, and time. I personally choose the collar that is attached to the lid. This allows me to fully open the freezer and lift the beer lines, taps, gas block etc out of the way to allow easy access to the inside of the freezer for adding kegs, changing, removing corneys and co2 tanks. Mine is a six tap system with two co2 tanks (I already had them) one for the beer set at 12 lbs, and one for soda for the kids @ 25-30 lbs. I also have room for two extra kegs hooked to the co2 for conditioning. My freezer is a 15 cu ft. Here is a link to what I have done, minus a few of the completed pics. http://http://waorgany.blog.com/
This sticky thread was very good to read through and see what everyone else has done and thought of in the past. "SHOW us Your Kegarator" http://www.homebrewtalk.com/f35/show-us-your-kegerator-29053/
All the best and good luck on your build!!!!