Stun Belt

The Stun Belt is a belt that carries a battery, and contains features to give the subject an electric shock.

Scribblenauts
Equipping this object gives the ability to shoot an electric blast that electrify your target. It can't be used to kill someone, only stunning them.

Super Scribblenauts
You can interact with any object while equipping this object, interacting makes Maxwell display the Fiddle animation and electrify the target. In Super Scribblenauts it won't deal too much damage, but in Scribblenauts Unlimited will kill most creatures instantly.

Trivia

 * It is the only melee weapon that is also classified as a gun.