Answer:
You can use any vegetables you like. I like diced cooked potatoes, carrots, beets, green beans, minced onion, and sweet peas with a little bit of mayonaisse and vinegar.
Vegetable salad usually refers to a salad without greens or lettuces. So any vegetables you enjoy together can be combined. It's usuallly good to cut them in bite sizes and all close to the same size.