One of my favorite things (I'm probably going to say this about most things I use in the kitchen) is my Dutch oven. My dad got it for me one year for Christmas and I love this thing! It's so versatile. I use it at least once a week and honestly I could probably use it a lot more than that.
Things I use my Dutch oven for include:
-soups and stews
-one pot dishes
-frying things like boneless wings or pickles
-boiling pasta for dishes
-pasta sauces like for lasagna
Like yesterday and today for example. Yesterday I used it to make pretzels in the morning and fried boneless wings in it later that night. Tonight I made a one pot pasta dish. I love it! There's so many uses for it and it's oven safe. Mine is by Lodge and it's enameled cast iron so it's heavy. A good Dutch oven is essential to have in your kitchen arsenal!