leftover dinners :p
I buy a stack of those microwaveable Enjoyo meals - butter chicken and rice, nom nom nom.
make a chicken Caesar wrap - flat bread wrap, lettuce (whatever kind, normal or fancy), some sliced roast chicken meat, bit of fried bacon, drizzle of that Caesar sauce stuff (i dunno, its found with the salad vinegar stuff.. mayos and whatnot) and some sliced hard boiled eggies, yum yum.
make them in bulk, wrap, keep in fridge. grab and go in the morning.
also, if you have tuna - nothing beats a tuna toasted sammach.
toast some bread, spread tuna, add pepper, slice cheese and some tomato.
Egg and bacon sandwiches/buns, hard boiled egg (mashed) with mayo and lettuce sandwiches, chicken and mayo sandwiches, bacon butties,
if you've got all the time in the world the night beforehand or set aside a night, cook something extra that can be eaten cold or microwaved.
I specifically make certain things purely for work lunches, sausagerolls, pies and whatnot.
oooh something really nice thats eaten cold or hot, cook up some pasta, shells, elbows or macaroni, fry up some bacon and onion in a wee bit of oil, then mix it with the drained pasta, add pepper.
your face, needs moar face.