In a large pitcher, combine the cranberry juice and cider.
Cut 1 strawberry in half, rub the rims of 4 glasses with the cut pieces, and dip the rims in the Pop Rocks to coat (if using).
Serve the juice mixture over ice in the prepared glasses. Garnish with the remaining whole strawberries. (For an adult version, add 1 ounce vodka to each drink. Enjoy after the kids go to sleep.)