This hack is so convenient that you might not even find it necessary to go out and purchase a pencil sharpener. If you do ...

There are some inventions that look completely pointless to the untrained eye: who would ever need a motorized garbage can, an electric pencil sharpener ... with an ultra-small lithium-ion battery ...

Although pencil sharpeners have a blade, it's usually too small to be considered a problem, similar to can openers. It's also ...