Meet the KeyUnity KU02 Multi-tool Carabiner Keychain: a 7-in-1 tool designed to get you unstuck anywhere. It works as a screwdriver, scraper, prybar, box opener, glass breaker, hex driver and M4 hex wrenches. It is CNC machined from TC4 Titanium.
The KU02 Multitoo Carabiner weighs only 1.7oz. More info is available here.