Doctor Who Bow Ties Are Cool Lanyard This cool Doctor Who Keep Calm Lanyard with 2D TARDIS Charm is ideal for holding ID cards or passes at work, college, and conventions, or simply wear it as is to show your love for the Doctor! With its countless practicalities, this Doctor Who Keep Calm Lanyard with 2D TARDIS Charm is quite simply the second best form of neck wear after bow ties!