There are legitimately useful ways to use a laser pointer. It can be used if you happen to be giving a business presentation, nobody there could miss what you were drawing their attention to.
If you were instructing children [or anybody else] about the constellations, they would be able to understand just which stars you were talking about with the use of this strong green beam.
Normally when you look into the sky with the naked eye, you have a bit of a problem sorting out which star you want to look at, but with the pointer this would be a lot easier.
If you used it in conjunction with your telescope, all you astronomers out there, I think it would be a great help in locating your particular area of interest.
The 5mW green laser pointer can be fun as well, but always keep in mind safety precautions. You must never lose sight of how strong a laser beam can be, think of laser surgery! Granted you would need a much stronger beam than 5mW but nevertheless it could burn if directed at your eyes or flesh.
Never point it at any person or animal and never use it to be annoying by pointing at the windows of a house, a moving vehicle with a driver who could be distracted, and never ever at an aircraft.
If you want to stay on the right side of the law and just enjoy your pointer, do the right thing. Use the laser pointer sensibly. This way nobody else is going to be bothered by you having fun.
You can burst balloons, light matches, cut reasonably light plastic packaging with the beam.
You could have a lot of fun with other people who have a pointer, putting on your own light show.
There are many different brands in this power range and many different qualities so you are sure to find one to suit your budget and expectations.
I have even seen one supplier who is giving a free red laser pointer when you buy a green one. That has to be good value.
If you want to think of something different for your company to give as promotional gifts, how about a red or green laser pointer pen? This would be different and you can have all your company details printed on the product or the presentation box.
This would make you appear very up-to-date in your outlook.