basic potato soup;
chicken & rice soup: 1 chicken thigh boiled to pieces in 2 qts water, and chopped small, salt & pepper; 2 cups rice cooked in a separate pot of salted water, drained well; combine the chicken, broth & rice & it'll feed several. You can add a couple of bouillon cubes to the broth if you have them.
we saved the leftover pieces of cornbread, biscuits, bread heels in a bread bag in the freezer, which mama used to make cornbread dressing using the cornbread & bread heels, and she made bread pudding out of the saved up biscuits with a little sugar, cinnamon, soured milk & vanilla. She always saved any leftover rice (which usually wasn't much) until she had enough to make rice pudding using just a little sugar, cinnamon, soured milk if we had any & vanilla (imitation).
fried biscuits for breakfast: using leftover biscuits, cut them in half, spread a little butter, margarine or bacon grease on the cut surface of each side and fry until crunchy in a hot iron skillet. I still make this.