Place your bag of ice on a sturdy surface – the floor or a hard counter will suffice. Give it a few whacks with a rolling pin, to break up the ice inside. Then, take around one to two cups of this roughly crushed ice, and pour it into your blender. Pour in around one and a half cups of water, and turn the blender up on high.
Blend the ice and water together, until the ice is finely crushed and smooth – by this point, it should look like shaved ice. Make sure you stop the blender the moment the ice reaches this consistency – if you keep blending, the mixture will eventually turn into water. If it becomes too liquid at any point, simply add more ice and pulse for a minute.
Now, line your small plastic cups up close to the blender, and use either an ice cream scooper or a large spoon to scoop the ice out of the blender. Place a scoop or two in each of the plastic cups. Drizzle generous amounts of snowcone flavouring over each, and serve chilled.
If you are unable to find pre-packaged snowcone flavouring, or simply prefer to make your own, then place a small saucepan on the stove over low heat, and add in 2 cups of sugar, and ¾ cups of water.
Allow this mixture to come up to a boil, and when it does, take it off the heat, and stir in the package of Kool-Aid. Allow it to dissolve completely, and once it does, your homemade snowcone syrup is ready. Let it cool down, and then place it in the refrigerator to chill. Finally, pour it over your snowcone, and enjoy.