Oops! I forget how far this board travels! Claxton Fruit Cake is a staple here in the deep south! Sure, any good baked fruit cake should substitute fine. It's about a pound of cake chocked full of fruit and nuts with a bit of spices thrown in.
http://www.claxtonfruitcake.com
We find them in our local grocery stores as well as Walmart and even in CVS and Walgreens.