Jeff, that leftover roast meal sounds great! I never know what to do by the third night. We always have hot roast sandwiches with homemade fries on the second night. But we cut the roast up into small pieces and cook it right in the gravy, then pour it over bread and fries.
Also, when we have burritos, we usually have a lot of burrito mix left over - hamburger, spices, refried beans, etc. On day two, we'll take that and make homemade fries supreme. Putting sour cream and fresh tomatoes/green onions on top makes a great lunch.
Tammy