I remember that laser thing, so many people wanted one, and people were just using them to kill inects and stuff. It is cool at first, but then its one of the most dangerous inventions yet, you can literaly set mountains on fire miles and miles away by shineing it on dry, dead bushes...knowing kids they would wanna do that type of shit (and not get caught).
And in terms forest fires, are the main cause of death for tens to hundreds of thousands of living animals in forest per year. Not to mention its beyound the laser pointer warning where you can go blind if you look into it (for long periods), for this one... if you look into to it, you'll go blind instantly.
Way to many draw backs and negatives instead of positive uses...and seen one where they made a even more powerful one that melted a boat miles away, even carving there name on the moon, (dont know if the moon one was true).