My 5-year-old requested a "jewel cake" for her birthday, and she also loves the ocean, so we decided on a pirate's treasure chest. Cake is a half-sheet WASC (used confetti cake mix instead of white) cut into fourths and stacked and filled with raspberry buttercream. Lid is RKT, pearls are gumpaste rolled in pearl dust, seashells and starfish are fondant painted with vodka/pearl dust mixture. Jewels are Jolly Ranchers. Coins are plastic, unfortunately, because I couldn't find gold-covered chocolate coins in my town. The birthday girl was thrilled! TFL!