Save time by making the simple syrup first. While it cools, you'll have plenty of time to wash and cut the fruit.
1/2 cup water
1/3 cup sugar
1 (6-inch) vanilla bean, split lengthwise
2 cups seedless green grapes, halved
1 cup fresh blueberries
1 cup sliced fresh strawberries
1 cup fresh raspberries
How to Make It
Combine water and sugar in small saucepan. Scrape seeds from vanilla bean; stir seeds into sugar-water. Bring to a boil; reduce heat and simmer 11 minutes or until reduced to 1/2 cup, stirring occasionally. Remove from heat; cool completely.
While syrup cools, combine fruit in a medium bowl. Pour cooled syrup over fruit, tossing gently to coat fruit.