I use a cheap, allegedly less than 5mW, green laser pointer to point things out in the night sky at public astronomy events. Unfortunately, recent NIST tests
show that a lot of green laser pointers generate a lot of extra visible and infrared light. The infrared one can do something about.
I ordered a 9.5mm IR cut (not IR pass!) filter from an ebay seller. It was $7, shipped, for a pair. Direct from China, of course.