Ilbo's sword is an unnamed sword belonging to Ilbo. It is similar in shape to a lightsaber from the Other Worlds' "Star Wars" movies. It lights up the darkness for Ilbo, Chugs, and the Unidentified Blue Guy.
My Adventure in Sammy's Blue WorldEdit
Ilbo attempts to fight Villy with it, but Villy's dagger slices through it, also killing the unidentified blue guy. It is now in the possesion of Villy, although it isn't much use as it's torn in half.