We love making our own snow cones. We have a little snow cone maker. Its great. I prefer making my own syrup though because its cheaper and I think it tastes better. Its also easy.
2 cups granulated sugar
1 cup water
one package Kool-Aide or 1/2 tsp. of your favorite extract
In a medium pot bring the sugar and water to a boil. Boil for 1 minute. Then add the Kool-Aide or the extracts. I like storing it in the fridge but according to the internet (which never lies) you can leave it at room temperature for up to one year.