Prepare the cake: Preheat your oven and prepare the cake mix according to the package instructions.
Bake the cake: Pour the batter into a greased or lined 9x13-inch baking pan. Bake as directed, then allow the cake to cool completely.
Crumble the cake: Once cooled, crumble the cake into a large bowl until it resembles fine crumbs.
Mix with frosting: Add the cream cheese frosting to the cake crumbs and mix until the mixture holds together when pressed.
Shape the cakesicles: Scoop out portions of the mixture and mold them into popsicle shapes, about 2 inches long. Insert a popsicle stick into each shape.
Chill the cakesicles: Place the shaped cakesicles on a tray lined with parchment paper and refrigerate for at least 30 minutes to firm up.
Melt the candy melts: While the cakesicles are chilling, melt the red, white, and blue candy melts separately according to the package instructions.
Dip the cakesicles: Once the cakesicles are firm, dip each one into the melted candy melts, coating them completely.
Decorate: Before the coating sets, sprinkle with patriotic sprinkles if desired.
Set the coating: Allow the decorated cakesicles to sit at room temperature until the coating hardens.
Serve: Once set, your 4th of July cakesicles are ready to enjoy!