This is a safe ninja star that wont put holes in your wall but WILL be fun to throw. All you need is a few simple tools/supplies.
~|~Cardboard/Shoe Box/Soda Box/Thick or thin cardboard/ect.
~|~Scissors or something sharp to cut with.
~|~Tape: Gaffer tape or the tape that looks like metal. Duct Tape(the clear stuff) And optonal but useful, just Scotch Tape.
Once you have these, take a look at the next step!
Step 1: Step 1: the Tracing
OK know your design, then draw it on the cardboard and another right next to it. Another more efficient way is make a oragami Shuriken and trace that. What ever works for you.
Then go on to Step 2