I've noticed a lot of people come here thinking they pulled the wool to get help building their death laser. Good thing it's not as easy as slap a driver on a diode, and takes and understanding of the physics to make.
I've started using all the modules and extra diodes I bought, to make a laser show box. I have plenty of little dc motors around. Already figured out how to make some huge freaking beams when I was playing with Nichia 08's.
I have completed 3 pen builds, 405nm 150mw, 445-450nm 4000mw, and 532nm 100mw. While burning things at 10 feet while lying in bed is rather cool, I much prefer the 532nm pen. Not only is the 532nm the brightest of the three, it's just really a sweet color.