Avocado Salad
Combine the watermelon, tomatoes, cucumber, basil or mint in a large serving bowl.
Place the vinegar in a small mixing bowl, whisk in the oil, add the mixture to the salad, and toss well add avocado Season with salt and pepper, and serve either chilled or at room temperature.
you can change it any way you like, if you don't have grape use cherry or 3 or 4 small to medium red and/or yellow tomatoes. You can do 1 tablespoon chopped mixed fresh herbs, in any combination: basil, tarragon, chives, and cilantro
enjoy