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.
I want one of these for my wallet one day...
https://youtube.com/watch?v=7MzxchY5TtY
What do you carry on a daily basis?
I want one of these for my wallet one day...
https://youtube.com/watch?v=7MzxchY5TtY