As usual, the recipe, idea, and pics belong to Family Fun. I'm borrowing them to share. Check out their site for more fun ideas!
Here's the recipe:
Vanilla-flavored Greek yogurt
Slice melon into 1-inch-thick slabs, then use cookie cutters to make shapes.
Frost your treats with vanilla-flavored Greek yogurt (spoon the yogurt into a squeeze bottle to make decorating really fun and easy) and top them with sprinkles if you like.