Luau Cakes Where Can I Find A Pretty Tropical Cake For My Sweet 16 Luau?

Where can I find a pretty tropical cake for my sweet 16 luau? - luau cakes

Hey --
I'm looking for a simple cake for a luau Teens. I want something original, but always expressive of the theme. I hope you all have an idea, because I looked everywhere and have had no luck.
Thanks
PS I do not want a big cakes. "