I really enjoyed fooling around with these. I used my tripod and my DSLR camera. I put it on manual, opened up the shutter for anywhere from 10 seconds to 25 seconds. I also had to turn off the automatic focus. Even though the night pictures outside look like it was dusk, it was actually very dark outside.
It is my goal this year to get multiple colored laser pointers. I have a red one, but I want to see if I can find laser pointers in an assortment of colors. I think there is a lot more that could be done inside in the darkroom on the wall with the laser pointers.