High Power 500mW Green Laser Pointer with Laser Goggles

This laser is powerful and very inexpensive. It has been very helpful in my experiments (I'm a professor).

It's a powerful green laser, and you can see the beam in a brightly lit room. The various patterns are very cool. Unfortunately, I got it as a cat toy and it's too powerful for that, as it reflects off the hardwood floor in my cat's face and was too large and bright a target for her to want to chase. It's too bright for indoor applications, but it would be great for the outdoors.