Here is a very simple salad is is a perfect side dish or light lunch. The ingredients are variable and you add what you have or like and in whatever amounts you like. Feel free to experiment. Very simple, equal amounts of any or all of these, diced in the roughly the same sized pieces.
cucumber, peeled or not as you wish
I then dress it with a good olive oil and a couple grindings of salt and black pepper. Allow to sit for a few minutes before serving.