Ninja Star
thingiverse
It's a custom ninja star, which is open for non-commercial use, has 4 holes in the middle to hang up somewhere or stack on something idk, up to you on how you use this.
Download Model from thingiverse
With this file you will be able to print Ninja Star with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Ninja Star.