Ok, so I would like to make something cool. I have two hardrives that I have opened and that spins very well. I got several green laser pointers. I got a diffraction grating. I got mirrors. What can I do?. This might seem stupid but I don't really know, and maybe you can't do very much with this stuff, maybe you can. If anyone has done anythingg with similar stuff, please tell me. I wanna to something funny ;D