Materials: One black (or color of your choice) quart oil filler cap. One key - I preferred to use a flat hardware store key rather than an OEM key. 2 Part epoxy such as JB Weld.
Eyeball the key against the cap and pocket door.
Cut / grind off the key so the knob will be closer to flush with the pocket and doesn't look wonky.
Mix up some 2 part epoxy inside the cap, enough to fill it up 90% or so.
Put the top of the key in the epoxy (not the bottom!)
Prop it so its centered and straight somehow (don't remember how I did this) and let it cure.
If you remove one of the tumblers from the pocket locks and the gas cap lock then modify the "knob keys" they will work in the pockets and gas cap, but will not be able to be used in the ignition.
I did this so that the knob / key assembly only works on the fairing pockets only. The ignition key will still open the fairing pockets.
The end result blends right into the cockpit and is practically unnoticeable. Sometimes I pull the knob / key and put it in my pocket just in case. Most of the time it stays in though.