This is a smaller version of Thing 1787860... which I forgot to post until now.
It's not simply scaled-down from Thing 1787860, but has relatively beefier structure while maintaining a good tolerance between surfaces that shouldn't touch. It is a quick print to produce this tiny, but quite strong, pair of pliers. Yes, that is a dime sitting next to it.
The design is a true metamaterial: the entire object is literally one piece, even the hinge and spring, all printed without spans (and hence without supports).
The only thing to watch is that your slicer doesn't mess-up the spring. CURA seems to do fine, but Slic3r has been known to fragment the spring into pieces under some combinations of slicing parameters.