Chocolate cake with double chocolate buttercream (recipe from this site...yum!); fondant accents and lots of candy for the pirate's "booty";graham crackers for sand. Made from a 9 x 13 cut in half and stacked for chest base and 8" half rounds (3 layers) stacked sideways for the rounded top. I carved a little wedge in the rounds for an opening. Used watered down super black color to "age" the chest - just painted it over the buttercream. Paring knife made the wood grain. Thx to all here for the ideas!