A round cake with a circle of T-gauge track on top, with a train running around. Some scenery in the middle would be nice too. 
This is a time when O scale is definitely the way to go. There are a lot of Railwire members- you need enough cake for everybody. What we need is a cake that will hold a very large radius O scale track, preferably with a huge chocolate passenger station in the middle. Gondola cars loaded with hors d'oeuvres, and tank cars with the good stuff.
