The green light laser pointer is absolutely amazing. Unlike red laser pointers, not only can you actually see the laser beam as it travels to it's target but it projects so far that you can seemingly touch the stars!
The Economy Green Laser Pointer, with a wavelength of 532 nm is a great value. Perfect for use in bright auditoriums and great for pointing out stars. Operates on 2 AAA batteries which are included and comes in its own soft case and 6 month warranty.