Hey Creators love to show this idea of making Cool shuriken from cardboard, There are lots of video on internet which shows how to make shuriken out of popsicle sticks or shuriken out of paper, Problem here is shuriken made from Popsicle sticks are hard to work while from paper it is fragile, So cardboard eliminates those problems! Shuriken from cardboard What is shuriken Those who watch Naruto have pretty much good idea on what shuriken actually is. Those who doesn't know what is that cool looking gadget is and what are it's purpose let me tell you! Shuriken is a kind of weapon which was and being used in some parts of earth especially by so called ninjas, in reality i haven't