wiring fuel use to other items

I am looking for how I would wire the fuel use setup - like for the generator - to other items that don’t have those values available, like worn items (armor).
Example - armor that buffs when a rare stone is added to inventory, but uses this rare stone over time, or a gas powered exoskeleton (fuel used as timer for buff or exoskeleton functioning).
Example2 - a lawnmower or chainsaw :slight_smile: using gas to operate.

Thanks in advance.