Trekking poles, if you don't normally take them, are worth considering to aid you in poking into dark cache-hiding places.
You'll also need a few geocaching-specific essentials, like a selection of swag items to swap out if you choose to take something from caches you find. Trekking poles, if you don't normally take them, are worth considering to aid you in poking into dark cache-hiding places. Finally, because not all caches include a functioning pen or pencil, bring one along to be sure you can sign logbooks.