Measure out a packet of Kool Aid powder and pour it into a mixing cup.
Add one cup of cold water to the Kool Aid powder and stir vigorously until the powder is fully dissolved and the mixture is colored evenly.
Place crushed ice into a blender, then pour the Kool Aid liquid over the ice.
Blend on high for about 30 seconds until the mixture is slushy and ice is finely crushed.
Check the texture; if it's too thick, add a splash more water and briefly blend again for a smoother consistency.
Pour the vibrant Kool Aid slushie into glasses, revealing its icy, colorful appearance.
Serve immediately with a straw or spoon and enjoy the refreshing, icy treat.