Thanks to Whiskey Two-Four and all their manufacturing partners, M81 webbing is starting to find its way out into the wild. OC Tactical is already putting it to good use in their Clash Keychain.
The Clash gives you a way to carry your keys and clip them anywhere convenient thanks to the steel ITW Clash Hook found at one end. I suppose it could also make a decent handle to turn your keys into a melee weapon in a pinch. You would probably earn some style points for doing that kind of thing with an M81 Clash.