A toothbrush was an incredibly, spectacularly important item in the galaxy used for cleaning teeth. Luke Skywalker, Darth Vader, Exar Kun, Guri, Lando Calrissian... they all used toothbrushes. Chewbacca didn't, but that's a Wookiee thing. R2-D2 had a toothbrush attachment that he used to slaughter buzz droids. Toothbrushes were used between scenes in all six of the feature films. They appear in all the comics, novels, games... and Jar Jar Binks was viciously murdered by a toothbrush-wielding maniac sometime in the New Republic era.