Do you really need your laptop, tablet, digital camera, and smartphone on your trip? So many gadgets multitask these days that one or two should serve all of your needs. If you're packing your laptop for a business trip, you might want to leave the tablet behind and use your laptop to watch movies or read e-books. Smartphones can connect to Wi-Fi and work like laptops for browsing the Internet and checking email—and a flexible keyboard can let you type as if you were on a real computer. Transfer your music to your phone and leave your iPod behind. These gadgets may not seem like they take up a lot of space, but they can add up when you factor in all the assorted cords and chargers.