I've come very close to loosing more than one knife or axe by laying it down where I was working and walking away, most handle material becomes almost invisible in the woods especially if it's laying on the ground, I've taken to affixing a short bit of blaze orange lanyard on most of my woods tools for just that reason, I also changed out the zipper pulls on my pack on the pocket that holds my first aid kit, more for someone who may be helping me with an injury than for me, but it helps locate a misplaced tool in a hurry, and also acts as a way to hang your tools off the ground, if I'm camped in one place for a day or longer I usually cut a small sapling that has a lot of pokies on it and tie it like a short ridge pole to hang by pack and camp tools on, it keeps them off the ground and organized in one place.