One of the most popular ninja weapons is a Katana which is a Japanese long sword used by samurai warriors in the past. This sword is a good defense tool especially in close confrontations. Did you know that this type of sword has utilitarian functions for your camping/hiking trips? You can actually use it to chop wood or clear bushes. These type of ninja swords are expensive to buy but I want to show you away that you can make your own Katana.