Ethans wrist rocket

Made originally in the 50s the wrist rocket is a patted version of the sling shot but now considered a weapon it made of 4 things surgical tubing, bungee cord, metal and plastic the guy who invented it Howard Ellensburg, he first sold the slingshot as "Howard's Wrist Locker Slingshot and later made a deal with soled it as Saunders, and the slingshot was sold as "Saunders Wrist and now the wrist rocket can be found all over the world

http://melchiormenzel.de/slingshots_old_wristrocket.html