Pour 2 quarts of water into a 1-gallon pitcher or a large punch bowl and stir well.
Add the Lemon-Lime Kool-Aid mix and sugar to the water, stirring vigorously until fully dissolved, about 2-3 minutes.
Introduce the pineapple juice and thawed lemonade concentrate, mixing until combined into a vibrant green color.
For a festive touch, dip the rim of each glass in water and roll in red sanding sugar.
Just before serving, gently add the Sprite and ice into your punch mixture, stirring carefully to keep the carbonation.
Pour the Grinch Punch into the garnished glasses and serve immediately.