A solid basic kit is:

• Extra batteries
• Extra memory cards
• A tripod when the shoot calls for it
• Flash and remote triggers when needed
• A remote shutter release
• A small rain cover or even a folded garbage bag for quick weather protection
• A microfiber cloth or lens-cleaning tool for removing dust and fingerprints

Several photographers emphasized that spare batteries and cards are the top priorities—easy to forget, but critical.

It’s also smart to think beyond camera gear. Comfortable footwear and suitable clothing can make a real difference, especially if you’ll be walking, climbing, or working in changing weather. Staying comfortable helps you focus on shooting rather than distractions.

In short, the most useful accessories are the ones that keep you powered, give you enough storage, protect your gear, and help you work comfortably in the field.