DIY marble cake! Buy 1 box of vanilla/yellow cake mix and 1 box of chocolate cake mix. Fix as instructed. Before placing in over, take about 1/2 a cup and start poring batter (white, choc., white, choc., etc.)
Chocolate Filled Strawberries. I often stuff strawberries with cream cheese, but never thought about filling them with melted chocolate. Also love the idea of the egg carton for keeping them upright while chilling.