Bento is a Japanese term for a box lunch. Kyaraben or charaben is the term for a box lunch that is styled to look like people, animals, pop culture characters, or something else besides food. However, in American usage, the term bento has become an umbrella term to mean an artfully sculpted and arranged lunch. These came into being to get children excited about eating a packed lunch. As parents became more skilled at making these boxed lunches, they became an art form that appeals to those who never need to pack a lunch or eat a packed lunch. See some of the modern artists who excel at bento in a list I posted at mental_floss.