This electronic Thor hammer is exactly what your cosplay is missing | Mashable
The Meaning of Thor's Hammer, Revealed - Bounce Magazine
Amazon.com: Marvel Legends Mighty Thor Mjolnir Premium Electronic Hammer with Lights and Sound FX,Love and Thunder Roleplay Item,7 x 22 x 11 inches : Toys & Games
THOR: THE DARK WORLD: CHRIS HEMSWORTH THOR MJOLNIR HAMMER PROP (WITH DVD)