Powerful Laser Pointer

The video at this site will show you how to easily build your own powerful laser pointer. The tools will cost you a bit, but buying a pre-made laser of this strength would be more expensive.

http://www.noob.us/miscellaneous/how-to-turn-a-maglite-into-a-burning-laser-pointer/
A slightly more complicated version here:
http://felesmagus.com/pages/lasers-howto.html