I usually carry a belt pack with a few "tools" that come in handy at times. They are:
-small screw driver
-tweezers (handy for nano caches)
-multi tool (gerber or leatherman brand)
-flashlight
-magnetic pick up tool that extends to a two ft lenght(auto stores carry them)
-electrical tape
-extra pen and pencil
-extra log sheets and plastic baggies for cache repairs if needed
-chewing gum
-spare batteries for gps
-small note pad for TB #'s for discovery
-swag for trades
-sig items
-camera
For longer hikes in the woods i carry a pack with the following also:
-compass(in case gps stops working), In remote areas a topo map,and wise to leave your trip plan with someone that can get you help if needed
-water and snacks
-cell phone
-emergency poncho
-personal First Aid Kit
-bandana and pesonal items( TP and medications,etc.)
-bug spray
-waterproof matches
You may find other items useful which you will discover as you do more various caches.
Hope this helps.
Happy Caching.
bullseye1