Nail clipper

I carry around a nail clipper in my bag. It's come in handy more than once in the past.

Today I pulled everything out of the pocket it's usually in, looking for something else, and found a weird metal bolt with a notch cut out of it. Thinking nothing of it, I continued my search.

Then I found my nail clipper, with the top bit fallen off.

Turns out the nail clipper is a several pieces of metal held together by this one bolt.
It wasn't even that hard to put back together.

Very nifty bit of engineering, the nail clipper.