Batarang

Batarang, is a tool and generally non-lethal throwing weapon used by many members of the Bat Family, including Ryan Wilder. It's well known as Batman's main weapon, because he was the first to use this bat-shaped boomerang type no-bullet consumption weapon. Nowadays many vigilantes, including the likes of Ryan Wilder, Kate Kane, Barbara Gordon, and even some Robins use different ones called "Birdarangs".

Ryan Wilder uses many throughout her adventures in television and comics. In the show Batwoman she used to throw them haphazardly, which caused annoyance from Luke Fox, though she's gotten better at throwing them now.