I treat myself to a massive homemade salad dressed with apple cider vinegar, pepper and a pinch of sweetener. All sorts go into it - grated carrot, lettuce, avocado, frozen soya beans, frozen coriander, frozen ginger, tomato - yesterday's even featured some raw mushrooms and frozen spinach. Sometimes peppers, chillies, oh, and chick peas if I'm going to need to be carb-fuelled that day.
I top it with a wedge of cream cheese and half an avocado, or a boiled egg with or without some ham, or my absolute favourite is some tinned salmon mashed well with a spoonful of mustard and a whole load of ground ginger.
Yes, it's a time commitment, but I make it the night before then bung it into my bag in the morning to take to work. And I'm worth it!