Tripods are probably the single most useful photo accessory you can own, helping to capture everything from crisp landscapes to long exposures of the night sky. I use the Manfrotto BeFree, which comes in a more affordable aluminum version and a pricer carbon fiber model. The BeFree weighs a measly three pounds (or less, depending on the model you pick), but it’s sturdy enough to support most camera/lens combos. Another often-recommended model is the Vanguard Alta Pro, which is available for about the same price as the BeFree. Also consider something like the GorillaPod, a super-portable mini-tripod that attaches to fences, trees, and so on.
Remote shutter release
Speaking of crisp landscapes: About $10-15 will net you a remote shutter release, which will let you snap photos without physically touching your camera, thus reducing any blur from camera shake. Alternatively, you can set your camera’s self-timer to something like 2 seconds to achieve the same result. However, if you’re interested in making any very long exposures (for night sky photography, for instance), you’ll probably want a shutter release, which can keep your shutter open for long periods without having to keep your finger on your camera. Here’s the one I use, but you’ll need to be sure to get one that’s compatible with your particular camera.
Extra batteries and memory cards
You’re going to want to make sure you’ve got enough batteries and memory cards for the trip. Bring your charger and top-up your batteries overnight (make sure to bring an adapter if you need one for where you’re traveling.) I usually use these 32GB memory cards, which are big enough to store lots of images but aren’t overwhelming when you’re scrolling through your pictures later. Protip: If you’re out shooting in the cold, keep a couple of extra batteries inside your jacket and close to your body where they’ll stay warm — low temperatures can make batteries drain more quickly.