Throughout my career I have always been amazed in the “stuff” that firefighter carry in the pockets of their bunker gear. I have seen everything from a complete set of screw driver, to a metric size tool kit. I remember one firefighter had what appeared to be an entire tool box in his coat.
But what is really need to efficiently do your job, I have attended classes with speakers like Tom Brennen of FDNY and other who explained some of tools that firefighter need to carry. For example wooden door chocks, homemade door blocks or ten penny nails to be utilized s chocks, a vice grip where you can customize the handle to be a key tool, or screwdriver head, you can even drill a hole on the handle to attach a short dog color chain that can be used to attach to a door handle to quickly close a inward opening door. Wire cutters that can be used to untangle yourself if trapped. Webbing and a 30-foot section of personnel rescue rope should be carried by all firefighters
No matter what you carry, as you inventory your pockets you should consider your mission, are you assigned to a Engine Company where your primary mission to hose line operations, are you on a Truck Company or Rescue Company where you are involved in VES, Rescue, roof operations or forcible entry.
Because of the added weight or bulkeyness of some tool, only carry what you need to carry out your mission.