In a large bowl, add the cake mix, eggs, vegetable oil, and vanilla. Stir until well incorporated.
Chill the dough for 20 minutes.
Meanwhile, preheat the oven to 350 degrees Fahrenheit. Line a baking sheet with parchment paper and set aside.
When the dough is done chilling, scoop the dough into 1- to 1 ½-inch balls and place them on the prepared baking sheet.
Place baking sheet in preheated oven at 350 degrees Fahrenheit. Bake for 8-10 minutes in the preheated oven. Do not overbake.
Let the cookies cool completely before the next step (important).
Melt each of the red, white, and blue melting chocolates in separate bowls in the microwave in 30 second intervals until the consistency is smooth and creamy.
Line a baking sheet with parchment paper.
Dip half of a cooled cookie into the melted chocolate. Set down on parchment lined baking sheet. Immediately add the sprinkles of your choice. *Handle the cookies with care as they tend to be delicate*.
Let the melting chocolate set naturally or pop the cookies into the refrigerator to set faster.