A red laser pointer isn't special anymore because, as a geek, you always need extraordinary gadgets. So why not use a green laser pointer?! It is cool, rare and even better than a red one, because the eye can detect green light easier than red light and so the beam of the green laser pointer seems to be much brighter. This laser pointer has a very high power and its beam is visible several 100m (please ensure that you don't hurt humans or animals!).

This green laser pointer emits green light with a wavelength of 532nm and it has a power of 1MW (class 2).