Something not too many people have, but you really like. Not like a flashlight or a knife/multitool. My most unique (although still popular) are probably my loop quiet ear plugs. They come in handy in a lot of cases and word really well.
A small pair of vernier calipers. I don't use them a lot, but sometimes they come in very handy.
What do you carry on a daily basis?
A small pair of vernier calipers. I don't use them a lot, but sometimes they come in very handy.