This cannon is scarcely larger than a dime, and at first glance it's not looking all that scary. But watch this video of it firing its ball-bearing-sized cannonball. Look what it does to that beer mug! And it's accurate, too. This thing could put an eye out.
Arm yourself with this baby, and for extra protection you can pack the world's smallest pistol as a sidearm. Only then will you be fully protected against any Lilliputian armies you might encounter.
We want one, but it's a one-of-a-kind homemade mini-weapon. It looks dangerous enough to be illegal.