"Shall I throw these leftovers out, or put them in the fridge and throw them out tomorrow?" - words my silver-haired old mother used to say all the time when clearing away after a meal. Wrong, mum! There's always some way in which this stuff can be recycled, in an alimentary way of course. Even cabbage. You just have to be hungry enough.
Note that this is not quite the same thing as an 'Eilish tea', invented by my wife (Eilish) who just sticks the contents of the fridge on the table when out of culinary inspiration. Or my own variant of this, which is to stir fry everything first.
Endless possibilities here. Four roast spuds, cabbage, some Irish stew, a lump of stuffing, itself salvage from some soda farls and pancakes left over from a fry, some tomatoes and mushrooms (same fry), sweetcorn from the grand-daughter's half-eaten lunch, and a smidgeon of gravy.
I think just bung it all on a large pizza plate, and heat in the oven.
Yum!