I saw this idea on FB this week and we tried it. In a one-quart mason jar, add dressing first. Then add anything you like - peppers, cucumbers, radishes, mushroms, cranberries, sunflower seeds, ch...
DW puts salad fixins into a plastic bag -- dumps in dressing - shakes -- and dumps out the dressed salad. The bag gets thrown away. Nothing to wash. Salad is crisp because it is dressed just before serving. No jar to store in the fridge.