Here is a really simple tweak. First, I started adding a lanyard to my EDC flashlights. The first knot I used was a hangman's noose. It was easy to deploy and retie and added a few feet of cordage. Then, I changed to wrapping the light with a simple whipping. Adds cordage and it makes biting it for hands free usage more comfortable. A few years ago, I saw on candlepowerforums, a fella who added some cordage to his flashlight to convert it into a headlamp. It this rendition, I used a couple of constrictor hitches and a fisherman's knot. It has an added benefit of giving you a loop to slide your fingers into while holding the light. Makes it easier to hold something else at the same time. Same concept as the hideaway knife. I saw another one where the guy used one constrictor knot on one end of an Armytech headlamp to wear it like a necklace, which can also be held by the sternum strap of a pack. Anyone who has hiked or camped where there are flying insects can attest to the value of moving the light off your face. This one is not my picture. Please feel free to add your ideas. And it doesn't have to be about flashlights and knots.