In a medium bowl, whisk together powdered sugar, corn syrup, and water until smooth. Stir in vanilla extract.
Divide the mixture into small bowls, one for each color of food coloring you plan to use.
Add a few drops of food coloring to each bowl and mix until evenly colored.
Transfer each colored mixture into a separate piping bag or a zip-top bag with a corner snipped off.
On parchment paper or a silicone baking mat, pipe small dots or lines to create your desired sprinkle shapes.
Let the sprinkles air dry completely for at least 12-24 hours, or until hardened.
Once dry, carefully peel the sprinkles off the parchment paper. Break apart any pieces that have stuck together.
Store in an airtight container at room temperature.
Notes
These DIY sprinkles are perfect for decorating cakes, cookies, cupcakes, and more! They are completely edible and add a fun, colorful touch to any dessert.