This Instructable will show you how to make a very simple ninja star with something everyone probably has in their house and you can also make chili with it!!!!(dont throw this at anyone it can really hurt someone,i got my to peirce 3 inchs of drywall.)this pic isnt the real nija star you will be building srry.
Step 1: Gather materials
To make the ninja star you will need:
-One large tomatoejuicecan(works the best)
-A can opener with the pointy thing as in the picture.