There are plenty of fancy flashlights on the market. Looking for a tiny one you can take everywhere with you? The YSMART EDC Flashlight is worth a look. It is waterproof and can handle serious mistreatment. The flashlight measures 0.98″ long and 0.39in thick. It weighs only 4.5g.
These tiny flashlights can be ordered on Indiegogo at this time. Expected to ship in April.