I guess it depends on where I am.
When I visit my sister in Taos, NM, I stop at the Trading Post Cafe in Ranchos de Taos and pick up a Chicken Salad to go. It's a generous sized portion of fresh (real) chicken salad, light cole slaw and dressed mixed salad greens. With or without toast.
I ask them to put them into tight containers so they don't leak.
And then I'm assured of a lovely lunch on-board to wherever I'm travelling from Albuquerque.
If I'm driving to Abq the night before an early morning flight, I still get the luncheon from the TP, and put it on ice overnight.
It's especially fun to pack a real fork, rather than eat with a plastic fork. Sort of makes you think of the old days in First Class when you actually were fed... and also fed with some style.
And it also reminds me of the other old days when you could trade a nice lunch like this for an upgrade at the gate.
Rita