Hemostat

This is a latching hemostat. It works, but I wouldn't use it for medical purposes. :-)

Offset the handles a bit to unlatch.

It's based on a design by the former ICI Ltd. whose patent has expired.

Makes a handy clamp for small things. Yet another chip clip? You could modify it so the jaws close to a fixed opening if you're holding things together for gluing...

Because of the nature of the plastic (I used ABS) the hinge has a limited life. I kept flexing one until it broke, about 70 flexes. When it breaks, print another.