The small round hole at the end of the nail clipper is useful

As a screwdriver
Some nail clippers come with a built-in nail file. Besides filing nails, the pointed end of the file can be used as a screwdriver. Just place the tip into small screws and twist gently, similar to using a real screwdriver.

As a mosquito coil holder
Another little-known use is turning the nail clipper into a mosquito coil holder.

If you don’t have a coil holder, simply place the clipper flat, raise the nail file, and balance the coil on top.
If the coil has burned down to a small piece, you can also stick it into the gap of the nail clipper and light it.

Opening packages
You can make use of the pointed end of the attached nail file to cut through tape on packages or boxes.