Batman has always been the gadget-lover's superhero. If you need a reminder to that end, here's his expansansive arsenal from Batman Begins, The Dark Knight and, though not comprehensively, The Dark Knight Rises.

The Lightning Gun, or Tesla Gun, is a video game staple, but it's also a real thing that you can build for yourself with enough know-how and a well-equipped local hackerspace. Rob Flickenger shows the world how to create a hand-held weapon that shoots lightning bolts, from scratch. As Rob says: you pull the trigger, and lightning comes out the front.

Don't cry to us when the Mayan Apocalypse comes with a horde of brain-dead zombies because we'll just shake our heads at you for not stocking up on Arsenal Firearms' double barrel handgun that fires two bullets with every trigger pull.

Nerds, geeks, weaklings — it's time to stop getting your butts kicked. Slingshot expert Jörg Sprave is here to defend you from having your lunch money taken with his latest creation: the Nerd Revenge 2000. With this, no bully will ever mess with you again.