I had some store credit at Think Geek so I picked up the Wicked Laser 20mW greenie they carry. Just on a lark I pointed it at some electrical tape on my workbench which started to smoke and melt through. I did some other controlled shots after that and I can pop dark balloons at 60cm, go through...
Recently I saw some glow in the dark paint at Home Depot. Knowing that a Blue/Violet laser would make it flouresce and glow I bought enough to paint the ceiling in my living room and grabbed a couple of pointers off Amazon. I know they aren't the cheapest for a low quality pointer but Amazon...