Just bought a 1.3w Blu-Ray laser. (445nm wavelength).
 
It will arrive around Tuesday.
 
Here's some pics of it. (My friend from Cali builds them).
 

 

 

 
You can see that sick beam in the broad daylight! Also it pops balloons, lights matches, and all that crazy stuff. But these aren't to play around with. He has a friend who let the beam hit him in the eye for barely a second, and his eye has a permanent burn spot now.