I love leftovers, for lunch I found some cold cook potatoes, spinach, mushrooms and green beans in the fridge, I just chucked it in a frying pan with oil and garlic, it was blinking lovely. We have bubble a lot in this house as well.
Put left-over Sunday joint into food processor & mince. Fry an onion until soft. Put in mince & leftover gravy & 1/2pt of stock. Cube potatoes & carrots & put that in as well. Simmer for about 20mins. If you have any leftover veg chuck that in as well at the end & warm through.
I have to resurrect giveup's thread because I have just discovered the most wonderful leftover food. Last night I made roast veg (green and red peppers, shallots, sweet potato, baby corn and aubergine) with olives and feta cheese, which was delicious, but I made too much. So I eyed it suspiciously for a while today then decided to have it as a sandwich filling. It is fantastic. Strange, but true.