So, finally, I have found the solution--blender soups. Mind you, this solves the leftover vegetable problem, but does not mean that anyone will eat this stuff but me.
According to The Boston Globe Cook Book (mine is from 1974; later edition here): Leftover vegetables can buzzed into delicious last-minute soups. Use:
to name a few. Add: Milk or water or bouillon and seasonings; heat and serve.