1. (Child/Parent) Prepare cake mix. Using an ice-cream scooper, ladle batter into flat-bottom cones, filling halfway. Place cones in muffin pans, and put a coil of foil around each cone to stabilize. Bake for 30 to 35 minutes; let cool.
2. (Child/Parent) Snip off a corner of a resealable plastic bag; fit opening with a star-shaped decorating tip. Fill bag with two 12-ounce cans of whipped vanilla frosting. Pipe frosting on top of cones to look like swirled ice cream.
3. (Child) Top frosted cones with red, white, and blue sprinkles and serve.