Many banners consist of a long string or ribbon with cutout shapes, pictures, and letters hanging from it. Most say "Happy Birthday," although there are some specialized banners with messages like "Ready To Play" or "Pirates Beware." Most are themed, so find one that matches your party supplies or the birthday child's favorite character or activity. Some come with extra cutouts so that you can customize the banner for a particular age.
For a truly customized banner, choose one of the many personalized ones. These 15" by 60" water resistant, non-tear, fiber reinforced vinyl banners have a decorative border in any of hundreds of themes. There's plenty of room in the middle to have any personal message printed on it. These personalized banners can be used indoors or outdoors to honor a guest or mark a location or an event.
Be sure to include a banner among your party decorations so that you can honor a guest, welcome someone home, or celebrate an event.