A short list of what I bought and ate during my stay at a hotel for a house hunting trip:
-Apple cider vinegar: (inexpensive!) salad dressing and toner
-Garlic and chilli flax seed oil: (expensive!) salad dressing - but still cheaper then restaurant salads
-Avocados: puncture with a fork and squeeze on to salad
-Boxed salad mix: bowl and salad in one!
-Smoked Turkey: another topper for salad