Genuinely interested in how that is practical in an office setting. We barely have room to keep leftovers, let alone decent bread and cheese. It's also a bit boring if you're having it most days.
There's tons of different kinds of bread, cheese, deli meat, spreads, nuts, fruit and vegetables that you can easily make a different combination every day for a while. And you could pack a lunchbox that is enough to feed you for the day and leave leftovers at home.