As if there weren't a billion things you already had to buy once you became an adult, have you ever thought about a lunchbox? OK, maybe "lunchbox" is a childish term, but seriously -- how does a grown adult bring their lunch to the office without looking childish? Well, we've figured it out. These seven lunch bags are fairly trendy, fully functional and definitely won't be mistaken for something you'd take on the school bus. Happy lunching!