Fill a cocktail shaker with ice cubes.
Add sour apple schnapps, blue curacao, grenadine, and vodka.
Shake well until the drink is chilled.
Strain into a cocktail glass filled with fresh ice.
Top with Sprite or lemon-lime soda.
Sprinkle in a little edible glitter for a magical shimmer (optional).
Serve immediately and enjoy the spooky fun!