Marshmallows are awesome for all sorts of things, now they’re even great for inner office combat. This big red gun will take out all sorts of targets. It can shoot up to 15 mini marshmallows extremely rapidly. Sure, you’ll have to reload more often that way, but you’re shooting with mini marshmallows. Those bags are about as cheap as they get. You can purchase the gun for $40 through Think Geek.