Arguably the most iconic prop from the Star Wars universe is… a camera flash. It’s not a joke, Luke Skywalker and Darth Vader’s lightsabers (the handle, not the glowing, cut your hand off part) were both made from vintage camera flash guns.
Via Petapixel (How an Antique Camera Flash Became the Most Iconic Star Wars Prop). Who would have thought? Another piece of useless trivia for me to absorb.