This recipe may be modified over time but this is where we started and the kids love it.
We started with a blender, some ice cubes, club soda (use what you can after it explodes on you), and some sort of flavoring such as Crystal Light. The photo would actually need two Crystal Lights for our purposes since half way through this recipe my son decided he did in fact want one too.
Pour about 16 ounces (for two) of club soda into the blender, a whole tray of ice cubes and two packages of the individual servings of Crystal Light (not the 2 quart packages).
The final, most important step – blend it all up. It really does look a little gross but the kids love it and it is a great beverage for them to cool off with on these hot summer days.