Heat the oven to 350°F and line baking sheets with parchment paper.
Stir the white cake mix, eggs, and clear soda together until a thick, sticky dough forms.
Fold in the red and green M&Ms, white chocolate chips, and sprinkles.
Drop rounded tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between portions.
Bake for 10 to 12 minutes, until the edges are set and the centers remain slightly soft.
Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
