Something fun to do with your laser (besides burning)

[betalight]

..or just blinken random dots on skyscrapers and playing with the neighbors cats a block or two down....

Use it to project images!

Here is how:
http://www.instructables.com/id/Laser-Image-Projector/

 

[nanoWatt]

I was wondering the same thing about uses for a laser. I know you can make holograms, though I've seen that mostly with red.

If you had a bunch of mirrors, you could make your front lawn look like a hollywood security system.

You must have a beam expander of some sort, because I know the original beam is so small that there is a significant degree of diffraction.