Begin by crumbling your leftover cake into a large mixing bowl until it resembles fine crumbs.

Add vanilla frosting gradually, mixing with your hands until the mixture forms a dough-like consistency.

Firmly press the cake mixture into a cakesicle mold, filling each cavity completely.

Insert popsicle sticks into the center of each shape and freeze for 30 minutes.

In a microwave-safe bowl, add white candy melts and microwave on high for 30 seconds, stirring until smooth.

Carefully remove cakesicles from the mold and dip into melted white candy coating.

Let excess coating drip off, then place dipped cakesicles onto parchment paper to cool.

Mix powdered sugar with water to achieve drizzling consistency and divide into two bowls for coloring.

Drizzle the colored icing over the hardened cakesicles and allow to set for 10 minutes.