Fidget ninja Star

I designed and 3D-printed this ninja star (shuriken), and it came out really well. I mainly use it as a package opener—it cuts through packing tape very easily. It also throws nicely and pierces cardboard in a fun way, once you get the hang of it. For safety, I printed it with 100% infill using Bambu black PLA, but if you want more strength, you can always use tougher materials.