Please be extra careful, these things will burn your eye faster than you can blink. Don't have them in any household with kids around, they are too risky.
Burning lasers will blind you just bouncing a reflection from a table top. You need to prepare for them like you would for any dangerous activity, get and wear proper gear, especially eye protection. High density welding goggles are a good thing unless you can afford frequency specific filters and lasers. ($$$)
Burning lasers is a fuzzy term, even a modest size laser will pop a balloon or ignite a match, but they are not going to melt engines or cause siding to burst into flame.
Military lasers that can do that are in the 100 kilowatt class and need an airplane to power them.
Ordinary mortals can build/buy lasers in the 0-10 watt range and the laws require lasers to be labeled according to their power levels. Afaik, the US limit for lasers sold to consumers is under 10 milliwatt, but that surely has many loopholes and exceptions.
I've been very pleased with a well priced (about $20) green laser pointer from Sanwu (
https://www.sanwulasers.org ), it runs on a standard 18650 rechargeable battery and is an effective pointer even in daylight. They offer more costly units, but I have no need of those.
Note that this is merely a very high performance pointer, not a 'burning laser', although it certainly would pop a balloon. It still gives me enough concern that I always keep it locked and with the diffuser cap screwed on, because all it takes is one slip. These things are like loaded guns, waiting for the unwary.