In a large pot, melt butter. Pour package of mini marshmallows into pot and stir over medium heat until melted. Remove from stove. Add 6 cups of popping corn and about 2 tablespoons or more of decorative sprinkles. Working quickly, stir popcorn to combine. When cool enough to handle, form popcorn into 5 or 6 ears of corn. Set aside to firm up. Cut parchment paper into 20 inch long pieces. (Cut as many pieces as you have ears of corn. Place the 23 inch paper horizontally. Make 2-inch accordion folds vertically in the paper. Fold the paper up, and starting halfway up the paper, cut the left and the right side up to a point. Open up the paper, place the ear of corn in the cut area of the paper and fold up the ear of corn. Twist the straight edge end of the paper, and fold the pointed ends back to reveal the ear of corn.