Whisk 2 tablespoons red wine vinegar with1 1/2 teaspoons sugar, 1 teaspoon dijon mustard, 1/2 teaspoon each chopped thyme and kosher salt and a few grinds of pepper in a large bowl. Whisk in 1/4 cup olive oil. Add 1/2 small head shredded red cabbage, 1 1/2 cups halved seedless grapes, 1/4 cup salted roasted sunflower seeds and 2 tablespoons chopped chives. Season with salt and pepper. Let sit at least 20 minutes before serving.