I just carry a couple of tools in my leather jacket, a compact muti-tool with interchangeable tips and a baby pair of visegrips incase a cable breaks, oh yea and a masterlink stuck in my other pocket.
Sounds like an ex-enduro rider; I had sparkplug socket cut and welded to a rearwheel wrench duct taped to the frame.
Now I have a leather tool bag high on the forks, I didn't use the leather straps but stuck screw clamps inside a short piece of fuel line and chinched it up high & tight so it wouldn't touch the fender. I can post a photo if anyone wants to see.