The term "mini bar" often refers to the small assortment of overpriced beverages available in a hotel room. However, mini bars in the home have become popular as a social area for serving beverages. The design of your own mini bar should take into account the function, look and scale of the space where you want to integrate your mini bar. A mini bar can be as small as a rolling cart or as large as a built-in bar framed by cabinetry.