It really depends on the trip - if it's a beach vacation, you might just need to pack some sunglasses and sunscreen. For an office retreat, you'll want to pack a laptop and things like a notepad, paperclips, and pens. But for almost any type of trip, there are essential items that will flesh out your packing list. One of the most important things is your passport. Make sure it is valid with plenty of time before expiration. You also need to make sure your visa or green card is up-to-date. Booking hotels, flights, and rental cars online can save you money, but be aware of any applicable cancellation policies, especially if you are booking more than one thing at once. A good idea for packing may be an umbrella and comfortable shoes in case of rain and catchers in case of sun. Lastly, don't forget a smartphone and charger!