How can i make some cheap throwing knives/ stars?

You could buy a metal saw then make some out of sc metal. Or if your young enough to be in metal shop at school make some while the teacher isn't looking(Or get permission). And a throwing knife can be made by taking the blade off a pocket knife and then making a smaller handle(hilt) and sharpening the other side on a disk grinder. Take 4 blades and get um stuck together(weld, super glue, whatever) and then you have a throwing star.