Lunch today (last night's leftovers plus 1-2 additions):
Slow cooked beef (we all should know by now how wonderful the slow cooker can be. I have enough beef for the entire week now);
Boiled veg: kale, broccoli and green beans;
A hard boiled egg;
Half an avocado (kept in work's fridge)
I take the above, minus the avocado, from my fridge, stick it in the lunchbox, give it a good dash of pink Himalayan salt, and I'm off. I keep a bottle of organic apple cider vinegar at work, and avocados. Pretty simple stuff but effective.