USB Missiles are fun (I shot Dvorak in the chest with one once, it did not induce a heart attack as I had hoped), but actual cannons are even more fun. This 25-inch field cannon is the closest you ...

Water is a stable chemical, but with the addition of a little electricity, it can be split into its component parts. The result is just the right mix of H2 and O2 to convert back into water with a … ...

Much like the USB air darts we saw last winter, this new Circus Cannon connects to your free USB port (go on, unplug that scanner that you hardly use anyway), and then will shoot three foam "babes ...

This 2-inch muzzle-loading desk cannon actually fires micro munitions. Pack a couple of grains of black powder into the stainless steel miniblaster, light a real 2-mm fuse, and it'll launch .177 ...

There’s a desk-mounted CO2 cannon that one person feeds two-liter soda bottles into as “ammunition” and the cannon spits them back out after each round is fired.