We just got back from a cross-country road trip (from Southern California where we live all the way to the tip of Maine), when my youngest daughter had her 3rd birthday. Because we had spent a significant amount of time in Maine (and I lived there as a child myself), I decided to do a Lighthouse theme cake.
I used a marble cake for the base - dirty iced it in blue butter cream frosting. I added a layer of gel so it would look like water and make the waves out of fondant. I added edible glitter (blue/green) to the waves to make them sparkle!
I cut a hole in the center of the cake and made the entire tower out of rice crispy treat - dirty iced it in butter cream frosting and then covered it in dyed fondant - blue and white. I made the top a separate piece and stuck it on the structure with Popsicle sticks iced in black frosting. This was the flaw - it sunk over time so I recommend waiting until the day of the party to add the top part!
The rocks were pure fondant mixed with a small amount of black dye - I then kneaded and twisted it to make them look individual with their own markings.
I made the lobster out of red dyed fondant - and bought a fun LED light (that flashed like a lighthouse light does) and pulled just the light out - it came with no string because it was battery operated so I just stuck that inside so it flashed like a real lighthouse does!
The girls loved it but since there was an obscene amount of dye involved I gave them pieces with very little frosting on it.
I started out with knowing that I had to make a cake for my mom's birthday. And she lives in Florida, and loves the beach. So that's where the idea for a Beach Theme Cake came from. I just iced the whole cake white and made it kind of messy looking, then I used an airbrush machine to airbrush the water blue (it is a good tip to airbrush before you add on the sand because I did the sand first, and sand was EVERYWHERE).
But anyways, after I airbrushed the water, I added in some sand by mixing 1/2 cup of sugar and 1 1/2 tsp of cinnamon. This recipe I got from friendship bread and it made the perfect look for sand. Then I took a star tip and white icing and made a wave crest, that connects the water to sand. I also took teddy grahams and used icing for the bathing suits. I used fondant for the beach towels and the inner tubes. I used small pretzel sticks for the palm tree bases and green fondant for the leaves.
It ended up being a big hit, and the part of the cake with the cinnamon/sugar mix actually turned out tasting pretty good.