If you’re on the hunt for the best cat toy, you might be wondering, “Are laser pointers bad for cats?” There’s been a lot of debate and conflicting information about whether they’re OK to use, so ...

For comparison, a laser pointer used by sailors briefing their commander is typically around one mW, or 300 million times less powerful. The higher the energy output, the shorter the necessary ...

If your cat needs some extra mental stimulation or has gotten a little too chunky and needs a little exercise, a good laser pointer could do the trick. If you’re more interested in keeping your ...

[Jay] hacked a Blu-Ray laser diode into a keychain enclosure. He found a heavy brass keychain light from Lowe’s and stuffed the diode and a larger battery inside. The existing batteries weren ...