What can I make with these ingredients?

You could make a shepherd's pie with the potatoes, sour cream, onion and ground beef with a nice panko crust on top. You can do an omlette with those eggs for breakfast or even make a frittata or quiche. After you've made a large enough quiche, you can refrigerate this for whenever you need it. If you still have remaining eggs, boil them and also refrigerate. That way you'll always have them on hand for egg salads, sandwiches or you could even at them to rice and bean dishes. Or if you want dessert to go with your shepherd's pie, make pound cake with the eggs! Who doesn't like pound cake with fresh spring strawberries?