Wash the grapes thoroughly and pat them dry with a paper towel.
In a saucepan, combine sugar and water over medium heat.
Stir the mixture until the sugar completely dissolves.
Add vanilla extract to the sugar syrup and mix well.
Remove the saucepan from heat and let it cool slightly.
Dip each grape into the syrup, ensuring they are fully coated.
Place the coated grapes on a parchment-lined baking sheet.
Sprinkle with optional sprinkles for added flair.
Let the grapes sit at room temperature until the coating hardens.
Serve immediately or refrigerate for later enjoyment.