So I have this steak...

[Retrograde]

9. My go-tos for leftover meats

tacos/burritos/enchiladas
sandwiches (philly-style cheese steaks if there's enough and I have peppers in the house)
add thin slices to packaged ramen, along with (and dispose of the salt pack it comes with)
if it's been cooked rare, mince and add some wochestershire sauce for an imitation steak tartar
slice thinly and stir fry with onions and whatever vegetables are in the fridge; serve with rice
marinate, slice thinly, and add to a salad
mince and use in a ragu or add to a pre-made sauce

With only two of us in the house we've gotten good at using up leftover meats.