When it comes to making up a flavorful pasta salad from the odds and ends in your refrigerator, pretty much anything goes.
You need to pickle the beetroot for about a week before it gets pickled. I've served it with a broccoli salad but you can use any salad veg that you want eg cabbage, lettuce, cauliflower ...
This broccoli salad, with its rice and nuts, is a complete meal and one I serve regularly for dinner and make enough to pack for lunch the next day too. I quite often add other blanched veges ...