So, what are the basics? You can bring clothing, toiletries, and electronics, but make sure your laptop is out of its case and ready for screening. And, of course, you can bring snacks, because let's face it, airport food is not exactly gourmet. Just don't try to sneak on a McDonald's Big Mac, unless you want to get caught and become a viral meme.
Now, about those liquids. You can bring water, but only if it's in a container of 3.4 ounces or less. And don't even think about trying to bring a gallon of juice, unless you want to get flagged by the TSA. But, surprisingly, you can bring breast milk, formula, and juice boxes for kids, because, you know, babies need their snacks too.