To me art is any work that a person expresses oneself in. This, therefore, means all work can be art. The question then becomes what is the quality and how many people can see it. This is why things like paintings, movies, etc. are regarded as art the most. They are usually high quality and they are recorded so many people can see it. The same can be said for theatrical plays, books, and videogames (though the art community hasn't fully accepted this one yet). I would say that a toddlers scribbles or the way a delivery man makes a delivery are art as well, sure they aren't high quality, and maybe not many people get to see it, but it is still a way one can express oneself. So next time you think art, think to what degree, because every work could be considered art.