Begin by taking the seedless grapes off the stem and washing them thoroughly in a colander. Do not dry them as you want wet grapes.
Place one cup of cold water in a small dish.
Separate the jello flavors in small bowls by placing each jello flavor in a small dish or on a paper plate.
Place one grape on the end of a toothpick, dip in water, and then immediately dip into the jello covering each grape with a thin layer of jello powder.
Place jello covered grape directly onto a baking sheet lined with parchment paper and line the grapes up by flavor.
Place in the freezer for at least an hour or until the grapes are frozen.